JP2007207137A - Information sharing system, material information providing apparatus, quality information providing apparatus, data file, information management method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information sharing system for attaining high information sharing between an orderer and an order receiver of construction work. <P>SOLUTION: In the information sharing system 1, information sharing between the orderer, the order receiver, and a materials provider is attained by linking an information sharing system 2 between the orderer and order receiver for attaining information sharing between the orderer and order receiver of the construction work, and a materials information sharing system 3 for managing catalogue information on construction materials and a test result table. In particular, the information sharing system 1 registers the catalogue information and test result table to a materials DB 32 and has the link information shared between the orderer and the order receiver. Thus, an amount of data transfer is reduced and the originality of the catalogue information and test result table is guaranteed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information sharing system for sharing information related to construction work.

For example, Non-Patent Document 1 discloses that information relating to construction work is electronically documented.
http://www.mlit.go.jp/tec/it/cals/index.html

  The present invention has been made from the above-described background, and an object of the present invention is to provide an information sharing system that realizes higher-level information sharing among construction contractors.

In order to achieve the above object, an information sharing system according to the present invention includes an orderer terminal of an orderer who orders construction work, an orderer terminal of an orderer who orders this construction work, and a material that provides construction materials. An information sharing system including a provider's material provider terminal, acquiring material information on construction materials from the material provider terminal, and storing the acquired material information; and the contractor terminal Link information generation for selecting at least one material information from the material information stored in the material information storage means and generating link information for accessing the selected material information in response to an instruction from And link providing means for providing the link information generated by the link information generating means to the orderer terminal.
Preferably, the contractor terminal specifies construction work and designates any construction material, and the link information generation means associates the designated construction material with the designated construction work. Link information for browsing the material information is generated, and the link providing means provides the generated link information to the orderer terminal in association with the construction work associated with the link information.
Preferably, in response to an instruction from the contractor terminal, in a storage area of the material information storage unit, a record generation unit that generates a storage record associated with a construction work, and an instruction from the contractor terminal In response, the storage device further includes an authority granting unit that grants a storage authority for the storage record generated by the record generation unit to the material provider terminal, wherein the material provider terminal stores the storage granted by the authority granting unit Based on the authority, the link information generated by the link information generating means is stored in the storage record associated with the construction work, and the link providing means provides the link information stored in the storage record. .
Preferably, the information sharing system includes a plurality of contractor terminals for a plurality of contractors who receive the same construction work, and each of the plurality of contractor terminals identifies the construction work. Information about the contents of the construction work is shared with the orderer terminal, and each of the contractor terminals uses the construction identification information and the identification information of any construction material to construct the construction work. And specifying the construction material, the record generating means generates a storage record associated with the construction identification information for each construction material, and the link providing means associates with the construction identification information. The link information stored in the stored record is transmitted to the orderer terminal in association with the construction identification information.
Preferably, the orderer terminal displays the material information using the link information provided from the link providing means according to the orderer's operation, and receives the order according to the orderer's approval operation. Approval information for the construction material specified by the operator terminal is generated.
Preferably, construction information storage means for storing information relating to the contents of construction work input at the contractor terminal and the orderer terminal in association with construction identification information for identifying the construction work, and the orderer terminal Material information registration means for registering the construction information material information or the link information of the material information in the construction information storage means in association with the construction identification information when the approval information for the construction material is generated by Have.
Preferably, the material information includes shipping source position information for specifying a position of a shipping source of the construction material, and the information relating to the content of the construction information includes a site for specifying the position of the construction site. Environmental load calculating means that includes position specifying information and calculates an environmental load amount corresponding to a construction material transport operation based on the shipping source position information and the site position specifying information stored in the construction information storage means It has further.

  The information sharing system according to the present invention includes an orderer terminal of an orderer who orders construction work, an orderer terminal of a contractor who orders this construction work, and an inspection of a quality inspector who inspects the quality of construction materials. The orderer terminal and the contractor terminal manage construction information using construction identification information for identifying construction work, the inspector terminal, In accordance with a quality inspector's operation, in association with the construction identification information, quality information indicating an inspection result of the construction material used in the construction work is generated, and the generated quality information and the quality information are associated with the construction information. Authenticity assurance means for guaranteeing the authenticity of the combination of construction identification information, and the construction identification information and the quality information for which the authenticity of the combination is guaranteed by the authenticity assurance means to the orderer terminal. And an information providing means to provide.

  The information sharing system according to the present invention is an information sharing system including an orderer terminal of an orderer who orders a construction work and an orderer terminal of an orderer who orders the construction work. Construction information storage means for storing a document file edited by the orderer terminal in association with construction identification information for identifying construction work ordered between the orderer and the contractor; and the orderer terminal Or an item attribute management means for storing common items common to two or more document formats for the document format edited by the contractor terminal, and any one of the document files by the orderer terminal or the contractor terminal When a common item is edited, among the multiple document files associated with the same construction identification information, other items having the edited common item With respect to the common items of book files, and a common item managing means for applying the same editing.

  In addition, the material information providing apparatus according to the present invention stores material information storage means for storing material information related to construction materials, and when the construction material is designated by the contractor of the construction work, the material information storage means stores the material information. Among the material information, a link generation unit that generates link information that enables browsing of the material information of the designated construction material, and a link that provides the link information generated by the link generation unit in association with the construction work Providing means.

  Further, the quality information providing apparatus according to the present invention includes information acquisition means for acquiring construction identification information for identifying a construction work, and quality information indicating an inspection result of the construction material used in the construction work in accordance with a user operation. The construction identification information is generated in a manner that guarantees the authenticity of the combination of the quality information generation means for generating the construction identification information acquired by the information acquisition means and the quality information generated by the quality information generation means. And authenticity assurance means for generating a data file including the quality information, and information providing means for providing the data file generated by the authenticity assurance means.

  Further, the data file according to the present invention has construction identification information for identifying construction work and quality information indicating the inspection result of the construction material, and authenticity of the combination of the construction identification information and the quality information is guaranteed. It is comprised in the form which was.

In addition, the information management method according to the present invention includes an orderer terminal of an orderer who orders construction work, an orderer terminal of an orderer who orders this construction work, and a material provider of a material provider who provides construction materials. An information management method using a terminal and a server device that manages information, wherein the server device receives material information related to construction materials from the material provider terminal, and the server device receives the contractor terminal or In response to an instruction from the material provider terminal, at least one material information is selected from the received material information, and the server device generates link information for accessing the selected material information Then, the server device provides the generated link information to the orderer terminal.
The information management method according to the present invention includes an orderer terminal of an orderer who orders construction work, an orderer terminal of a contractor who orders this construction work, and an inspection by a quality inspector who inspects the quality of construction materials. Information management method using an operator terminal, wherein the orderer terminal and the contractor terminal manage construction information using construction identification information for identifying construction work, and the inspector terminal In response to the operation of a quality inspector, the quality information indicating the inspection result of the construction material used in the construction work is generated in association with the construction identification information, and the inspector terminal generates the generated quality information, and , Based on the construction identification information associated with the quality information, generating guarantee information indicating the authenticity of the combination of the construction work and the quality information, the inspector terminal, the generated warranty information, and the Generated The quality information, the providing the orderer terminal in association with the construction identity.

The program according to the present invention includes an orderer terminal of an orderer who orders a construction work, an orderer terminal of a contractor who orders this construction work, and a material provider terminal of a material provider who provides construction materials. In the computer that performs communication, the step of receiving material information on construction materials from the material provider terminal, and according to an instruction from the contractor terminal or the material provider terminal, at least from the received material information, A step of selecting one material information; generating link information for accessing the selected material information; and providing the generated link information to the orderer terminal to the computer. Let it run.
The program according to the present invention includes an orderer terminal of an orderer who orders a construction work, and a system including an orderer terminal of a contractor who orders the construction work. The terminal uses the construction identification information for identifying the construction work, manages the information related to the construction work, and at least the quality indicating the inspection result of the construction material used in the construction work in the computer communicating with the orderer terminal. Generating warranty information indicating the authenticity of the combination of the construction work and the quality information based on the information and the work identification information of the construction work in which the construction material is used, and the generated warranty information, and And causing the computer to execute the step of providing the generated quality information to the orderer terminal in association with the construction identification information.

According to the information sharing system of the present invention, it is possible to realize information sharing between the ordering parties of construction work more highly.
For example, according to the information sharing system of the present invention, it is possible to share information regarding construction materials used for construction work.

First, the overall configuration of the information sharing system 1 to which the present invention is applied will be described.
FIG. 1 is a diagram illustrating the overall configuration of the survey support system 1.
As illustrated in FIG. 1, the information sharing system 1 includes an ordering party information sharing system 2 accessed by the orderer terminal 402 and the contractor terminal 404, and material information accessed by the material manufacturer terminal 406 and the inspection organization terminal 8. And the shared system 3.
The orderer terminal 402 is a computer terminal that is used by the orderer of the construction work, and makes a request for the construction work and an approval or change request for the proposal from the contractor in accordance with the operation of the orderer.
The contractor terminal 404 is a computer terminal that is used by the contractor of the construction work, and is used for the proposal related to the construction work, the collection of the material information of the construction material used for the construction work, and the construction work according to the operation of the contractor. Request for quality inspection of the construction materials. In this example, an orderer terminal 404A of a main contractor who directly receives an order for construction work and an orderer terminal 404B of a subcontractor are provided, but the number of orderer terminals 404 is not limited to this. In the following description, the main contractor and the subcontractor are both contracted for construction work in relation to the orderer, and may be collectively referred to as a contractor.
The material manufacturer terminal 406 is a computer terminal used by a material provider who supplies construction materials, and provides construction material catalog information (material information) and construction material test results according to operations of the material provider. Provide tables (material information, quality information). In this example, a first material maker terminal 406 used by the first material maker and a second material maker terminal 406B used by the second material maker are provided. Is not limited to this. The material manufacturer terminal 406 is an example of a material provider terminal according to the present invention.
The inspection organization terminal 408 (quality information providing device) is a computer terminal used by a quality inspector who undertakes a construction material test, and creates a construction material inspection result (test result table) according to the operation of the quality inspector. And provide test results (test results table). The material manufacturer terminal 406 and the inspection organization terminal 408 are specific examples of the inspector terminal according to the present invention.

The ordering party information sharing system 2 includes a construction management server 20 that manages construction information shared between ordering parties (information relating to construction work), and an ordering order that stores construction information shared between ordering parties. And a database (ordering order DB) 22.
The construction management server 20 manages information input from the orderer terminal 402 and information input from the contractor terminal 404 by using a construction ID (construction identification information) that uniquely identifies the construction work. Is registered in the order placement DB 22 in association with the construction ID.
Further, the construction management server 20 realizes sharing of information regarding a specific construction work by managing the access authority of the orderer terminal 402 and the order receiver terminal 404 in association with the construction ID.

The material information sharing system 3 is managed by a material management server 30 that manages catalog information and a test result table provided from a plurality of material providers (material maker terminal 406A and material maker terminal 406B), and the material management server 30. And a material database (material DB) 32 for storing catalog information and a test result table.
The material management server 30 assigns a material ID for identifying each material to the catalog information of each material provided from a plurality of material providers, and manages the catalog information.
The material DB 32 stores catalog information (electronic data) provided from a plurality of material providers in association with material IDs.

In addition, the material management server 30 cooperates with the construction management server 20 to provide catalog information of materials used for construction work and to provide a test result table of materials used for construction work.
More specifically, when the contractor terminal 404 designates a construction work and selects a material, the material management server 30 receives and orders information for accessing the catalog information of the selected material in association with the construction work. Registered in the interpersonal information sharing system 2.
When the contractor terminal 404 designates a construction work and selects a material, the material management server 30 of this example creates and selects a material folder (including at least one material record) associated with the construction work. The link information of the catalog information of the registered material is registered in this material folder. The link information registered in the material folder is provided to the orderer terminal 402 via the inter-orderee information sharing system 2.

Further, when the contractor terminal 404 designates construction work and requests a material test, the material management server 30 is in a state in which the test result table provided from the material manufacturer terminal 406 or the inspection engine terminal 408 is associated with the construction work. To the information sharing system 2 between ordering parties.
More specifically, the material maker terminal 406 or the inspection organization terminal 408 requested to test the material creates and creates an integrated file including the created test result table and the construction ID of the construction work. The material information sharing system 3 is obtained by encrypting the integrated file using a secret key guaranteed by the electronic authentication system and adding the electronic certificate issued by the electronic authentication system to the encrypted integrated file. To provide.
In this case, the orderer terminal 402 acquires the link information of the encrypted integrated file via the material information sharing system 3 and the inter-orderer information sharing system 2, and uses the acquired link information, The integrated file (encryption) is accessed, and the encrypted integrated file (that is, the construction ID and the test result table) is decrypted using the public key registered in the electronic authentication system. If the integrated file is successfully decrypted, the authenticity of the combination of the construction ID (that is, construction work) and the test report is guaranteed. Further, the authenticity of the public key registrant (that is, the provider of the integrated file) is guaranteed by the electronic certificate added to the integrated file.

[Construction Information Management Program and Material Information Management Program]
FIG. 2 is executed by the construction management server 20 (FIG. 1), and the functional configuration of the construction information management program 5 for realizing the information management method according to the present invention and the information management according to the present invention executed by the material management server 30. It is a figure which illustrates the functional structure of the material information management program 6 which implement | achieves a method.
As illustrated in FIG. 2, the construction information management program 5 includes an input management unit 500, a construction record management unit 510, a database linkage unit (DB linkage unit) 520, an authority management unit 530, an electronic delivery unit 540, and an environmental load calculation. Part 550. The input management unit 500 includes an item attribute management unit 502 and a common item management unit 504.
The construction information management program 5 of this example is software having the above-described functional configuration, but is not limited to this. For example, all or part of the construction information management program 5 is hardware such as an ASIC. Alternatively, part of the functional configuration may be provided in the orderer terminal 402, the order receiver terminal 404, the material management server 30, or the like.

In the construction information management program 5, the input management unit 500 monitors the order placement DB 22 (FIG. 1) and manages information input from the orderer terminal 402 or the order receiver terminal 404. More specifically, the item attribute management unit 502 of the input management unit 500 stores the attributes of items included in the document format of the electronic document shared between the ordering parties. The item attribute is information indicating whether an item is common among a plurality of document formats, and which document format is common, for example, the orderer terminal 402 or an order received. From the operator terminal 404.
When the common item management unit 504 determines that the common item has been edited in any document file by the orderer terminal 402 or the order receiver terminal 404 based on the item attributes managed by the item attribute management unit 502, Of the document files associated with the same construction ID in the ordering DB 22, the same editing is performed on the common items of other document files having the edited common item.
For example, the order placement DB 22 stores a structured document such as XML, and the item attribute management unit 502 adds a tag indicating the attribute of each item in response to an instruction from the orderer terminal 402 or the order receiver terminal 404. When the document item is edited, the common item management unit 504 edits another document file according to the tag of the edited item.

  The construction record management unit 510 manages folders, files, and records stored in the ordering DB 22. For example, when the orderer terminal 402 or the contractor terminal 404 designates a construction ID and requests access to information related to the construction, the construction record management unit 510 or the folder included in the construction folder corresponding to the designated construction ID Access to the specific record in the file, and provide the requested folder or record to the orderer terminal 402 or the contractor terminal 404. In addition, the construction record management unit 510 restricts access (new creation, browsing, editing, deletion, etc.) to each folder, file, or record in the ordering DB 22 according to the authentication result from the authority management unit 530.

The DB cooperation unit 520 realizes information sharing between the ordering party information sharing system 2 and the material information sharing system 3 in cooperation with the information transfer unit 600 (described later).
The DB cooperation unit 520 of this example realizes information sharing between the ordering party information sharing system 2 and the material information sharing system 3 using the construction ID.

  The authority management unit 530 permits or prohibits access to information stored in the ordering DB 22 based on authority management information (for example, construction ID, user ID, and password) registered in advance in the authority management file 532. Further, the authority management unit 530 permits or prohibits access to information stored in the material DB 32 based on the authority to the ordering DB 22. The authority management unit 530 of this example, when the orderer terminal 402 or the contractor terminal 404 designates a construction ID, inputs a user ID and a password, and requests login, authenticates based on the construction ID, the user ID, and the password. If login is permitted, access to the information corresponding to this construction ID among the information stored in the ordering DB 22 is permitted, and access to the information stored in the material DB 32 is permitted. . In addition, when the orderer terminal 402 or the order receiver terminal 404 requests the material catalog information in association with the construction ID, the authority management unit 530 of the present example stores the material record generated by the material record management unit 610 (described later). Among them, the access right to the material record associated with the construction ID and the material ID is given to the material maker terminal 406.

  When the orderer terminal 402 or the contractor terminal 404 specifies the construction ID and requests electronic delivery of information related to the construction work, the electronic delivery unit 540 specifies the designated construction ID among the information stored in the ordering DB 22. The construction record management unit 510 is instructed to read out the information associated with the information, and an electronic delivery folder is created using the information (information related to construction work and information related to materials) acquired via the construction record management unit 510 . The electronic delivery folder includes, for example, an order drawing folder, a meeting book folder, a construction plan folder, a completed drawing folder, and a photo folder. In the meeting book folder, a proposal document file for construction materials used in construction work (in this example, link information to catalog information is included), and a quality control file for construction materials used in construction work (in this example) Includes link information to the test report).

  The environmental load calculation unit 550 calculates the environmental load associated with the construction work based on information (information related to the construction work and information related to the material) stored in the ordering / ordering DB 22. When the environmental load amount calculation unit 550 of this example requests the calculation of the environmental load amount by specifying the construction ID and the material ID from the orderer terminal 402 or the order receiver terminal 404, the information ( The construction site position information corresponding to the designated construction ID (that is, the material transport destination) and the designated construction ID and material ID from among the construction ordering information and material catalog information) Extracting the location information of the provider (ie, the material transport source), and the environmental load accompanying the transport of the construction material based on the extracted location information of the construction site and the location information of the material provider (eg, manufacturer) Calculate the amount.

  As illustrated in FIG. 2, the material information management program 6 includes an information transfer unit 600, a material record management unit 610, a link generation unit 620, a catalog registration unit 630, and a material information registration unit 640. The material information management program 6 of this example is software having the above-described functional configuration, but is not limited to this. For example, all or part of the material information management program 6 includes hardware such as an ASIC. Alternatively, a part of the functional configuration may be provided in the material manufacturer terminal 406, the inspection organization terminal 408, or the construction management server 20.

In the material information management program 6, the information transfer unit 600 cooperates with the DB cooperation unit 520 to realize information sharing between the ordering party information sharing system 2 and the material information sharing system 3 using the construction ID. .
The material record management unit 610 manages material folders, material files, and material records (stored records) stored in the material DB 32. For example, when the contractor terminal 404 designates a construction ID and selects a construction material, the material record management unit 610 creates a material folder corresponding to the designated construction ID in the material DB 32 and stores the material folder in the material folder. A material record corresponding to the selected construction material (material ID) is created. In this case, the material record management unit 610 communicates with the construction record management unit 510 via the information transfer unit 600 and the DB linkage unit 520, and information corresponding to the designated construction ID (construction name, construction place, Get the name of the contractor) and insert the acquired information into the material file. The material record management unit 610 restricts access to each folder, file, or record created in the material DB 32 according to the authentication result from the authority management unit 530. In the present embodiment, a material folder is temporarily created in the material DB 32, and the material folder is finally integrated into the construction folder in the ordering DB 22 as a specific example. Are not necessarily created in the material DB 32.

  The link generation unit 620 generates link information for accessing the catalog information of the construction material or the integrated file (file including the test result table), and sends the generated link information to the material record management unit 610 as the material record. To register. For example, when catalog information is registered from the material manufacturer terminal 406, the link generation unit 620 may generate a link code of the registered catalog information and register it in the material record, or may be registered in advance in the material DB 32. The link code of the selected material may be copied to the material record from among the linked codes.

  The catalog registration unit 630 registers the material catalog information received from the material manufacturer terminal 406 in the material catalog folder of the material DB 32. Upon receiving the catalog information data file from the material manufacturer terminal 406, the catalog registration unit 630 of this example assigns a material ID to the received catalog information, associates the catalog information data file with this material ID, and stores the material DB 32. To the material catalog folder.

  The material information registration unit 640 registers an integrated file (a file including a test result table, a construction ID and an electronic certificate) provided from the material manufacturer terminal 406 or the inspection organization terminal 408 in the test result table folder of the material DB 32. To do. When the integrated file is registered by specifying the material record from the material maker terminal 406 or the inspection organization terminal 408, the material information registration unit 640 of this example associates this with the construction ID and the material ID of the specified material record. The integrated file is registered in the material DB 32, and the link generation unit 620 is instructed to register the link code of the integrated file in the specified material record. In response to this, the link generation unit 620 generates a link code of the integrated file and registers it in the material record in association with the construction ID. The link code registered in the material record (link information to the integrated file) is transferred to the inter-ordering party information sharing system 2 (more specifically, the construction folder in the ordering DB 22) via the information transfer unit 600. Is done.

FIG. 3 is a diagram illustrating information managed by the construction information management program 5, and FIG. 3A illustrates an item attribute table 220 managed by the item attribute management unit 502, and FIG. 3A illustrates an ordering / ordering information table 222 managed by the construction record management unit 510, FIG. 3C illustrates a meeting book folder 222A managed by the ordering / ordering information table 222, and FIG. The authority management file 532A managed by the authority management unit 530 is illustrated.
As illustrated in FIG. 3A, the item attribute management unit 502 acquires, from the orderer terminal 402 or the contractor terminal 404, the item attribute table 220 that associates the attributes of the input items with the respective input items. In accordance with the item attribute table 220, a document format tag corresponding to the construction ID is defined.

  As illustrated in FIG. 3B, the construction record management unit 510 receives a plurality of construction folders (in this example, ordering) in the ordering DB 22 in response to an instruction from the orderer terminal 402 or the orderer terminal 404. A drawing folder, a meeting book folder, a completed drawing folder, etc.), and the created construction folder is managed in association with the construction ID. For example, CAD drafting at the design stage of a building is registered in the order drawing folder, and for example, a document file used in the meeting between the orderer and the contractor is registered in the meeting book folder. For example, CAD drawing after completion of a building is registered.

  As illustrated in FIG. 3C, the construction record management unit 510 includes a plurality of meeting book folders 222 in FIG. 3B in response to an instruction from the orderer terminal 402 or the order receiver terminal 404. A document file (in this example, the proposal file 1, the approval file 1, and the proposal file 2) is created, and the created document file is browsed and edited. For example, the contractor terminal 404 sends an instruction to the construction record management unit 510 (FIG. 2), creates a proposal file 2 including a material proposal sentence and a link code (described later), and stores it in the meeting book folder 222A. Let me register. The orderer terminal 402 accesses the proposal file 2, confirms the standard of the construction material used for the construction work, and approves the material.

  As illustrated in FIG. 3D, in the authority management file 532, an authority management table 532 in which a user ID and a password are associated with each other is registered in association with a construction ID. When the orderer terminal 402 or the contractor terminal 404 designates the construction ID and requests to log in to the inter-orderee information sharing system 2, the authority management unit 530 refers to the authority management table 532 and refers to the orderer. The user of the terminal 402 or the contractor terminal 404 is authenticated, and access to the construction folder corresponding to the construction ID is permitted or prohibited. In this example, when the contractor terminal 404 specifies a construction ID and selects a construction material, the authority management unit 530 accesses the selected material provider (such as a material manufacturer) in units of records. The authority is granted, and authority information (user ID and password) is added to the authority management table 532A. Similarly, the authority management unit 530 of this example records a record for a quality inspector (inspection organization, etc.) requested to perform a test when the contractor terminal 404 requests a construction material test by specifying a construction ID. The access right to the material file is given in units, and the authority information (user ID and password) is added to the authority management table 532A.

FIG. 4 is a diagram illustrating information managed by the material information management program 6. FIG. 4A illustrates a material catalog file 320 managed by the catalog registration unit 406, and FIG. The material file 322 managed by the material record management unit 610 is illustrated.
4A, when the catalog information (data file) of the material is input from the material manufacturer terminal 406, the catalog registration unit 630 receives the input catalog information (material manufacturer, product number, standard, A material ID is assigned to the manufacturing date, etc.) and added to the material catalog file 320 (the file in the material catalog folder) in the material DB 32. In addition, when the link generation unit 620 has created a catalog information link code in advance, the link generation unit 620 registers the created link code in the catalog information record in advance.

  When the contractor terminal 404 designates a construction ID and selects a material, the material record management unit 610, in the material file 322 stored in association with the construction ID in the material DB 32, as illustrated in FIG. 4B. In addition, a material record associated with the selected material (material ID) is created. Access to the created material record is permitted only to the material manufacturer 406 that provides this material, and the link code generated by the link generation unit 620 is registered in the material record in response to an instruction from the material manufacturer terminal 406. The Thereby, it is possible to prohibit other material manufacturers and the like from registering the link code without permission.

[Test result registration program]
FIG. 5A is a diagram illustrating a functional configuration of the test result registration program 7 which is executed by the material manufacturer terminal 406 (FIG. 1) or the inspection organization terminal 408 (FIG. 1) and realizes the information management method according to the present invention. FIG. 5B is a diagram illustrating an integrated file 9 created by the test result registration program 7.
As illustrated in FIG. 5, the test result registration program 7 includes a construction information acquisition unit 700, a test information generation unit 710, an electronic signature unit 720, a certificate addition unit 740, and a test result registration unit 750. A part of the functional configuration of the test result registration program 7 of this example may be provided in the material management server 30 or the like.

In the test result registration program 7, the construction information acquisition unit 700 acquires and acquires information (for example, a construction ID or a construction name) for identifying the construction work in which the construction material to be tested is used. Information (hereinafter referred to as construction ID) is output to the electronic signature unit 720. The construction information acquisition unit 700 of this example acquires the construction ID specified at the time of login when the quality inspector logs in to the material information sharing system 3 using the material manufacturer terminal 406 or the inspection organization terminal 408.
The test information generation unit 710 creates a test result table document file according to the UI operation of the construction material quality inspector, and outputs the created test result table to the electronic signature unit 720.
Note that the test information generation unit 710 may receive a test result table from another computer terminal.

  The electronic signature unit 720 (authentication guarantee means) guarantees the authenticity of the combination of the construction ID input from the construction information acquisition unit 700 and the test result table input from the test information generation unit 710. The electronic signature unit 720 of this example calculates the hash value of the integrated file including the construction ID and the test generation table, and guarantees the authenticity of the combination of the construction work and the test result table using the calculated hash value. The integrated file including the construction ID and the test generation table is encrypted with the secret key as guarantee information. A public key corresponding to this secret key is registered in a certificate authority (electronic authentication system in FIG. 1). Thereby, the authenticity of the combination of the construction ID and the test generation table and the authenticity of the contents of the construction ID and the test generation table are guaranteed. In this example, the authenticity of the combination of the construction ID and the test result table is double guaranteed by comparing the hash value and whether the integrated file can be decrypted. However, the present invention is not limited to this. For example, the authenticity may be guaranteed only by whether or not the integrated file can be decrypted.

  The certificate adding unit 740 reads an electronic certificate corresponding to the private key used by the electronic signature unit 720 from the electronic certificate file 730, and the read electronic certificate is encrypted by the integrated file (the electronic signature unit 720 encrypts it). Added). This electronic certificate is issued by the certificate authority (the electronic authentication system in FIG. 1) for the private key used by the electronic signature unit 720 and its public key. This electronic certificate guarantees the identity of the public key issuer (that is, the private key holder).

  The test result registration unit 750 (information providing unit) provides an integrated file (encrypted with a private key) to which an electronic certificate is added to the outside. The integrated file 9 provided by the test result registration unit 750 includes, as illustrated in FIG. 5B, a construction ID 900 for identifying the construction work, a material ID 902 for identifying the material, and a test result of this material. A test result file 904 that is a table, an electronic certificate 906 that guarantees the identity of the creator of the integrated file, a hash value 908 of a data file that includes the construction ID 900 and the test result file 904, and the like are included. The test result registration unit 750 of this example logs into the material information sharing system 3 and accesses the integrated file 9 input from the certificate adding unit 740 and the integrated file 9 to the material record in the material DB 32. Register the link code.

[Overall operation]
FIG. 6 is a sequence diagram of the information sharing operation (S10) in the information sharing system 1.
As shown in FIG. 6, in step 100 (S100), the inter-orderer information sharing system 2 performs an electronic bidding for the construction work between the orderer terminal 402 and the orderer terminal 404, and the construction work is completed. When the ordering party is determined, a construction ID for this construction work is generated.
In step 105 (S105), the inter-orderer information sharing system 2 creates various folders illustrated in FIG. 3B in response to a request from the orderer terminal 402 or the orderer terminal 404.
The orderer terminal 402 and the order receiver terminal 404 register document files in these folders, and browse and edit them to exchange and share information related to construction work.

In step 110 (S110), the contractor operates the contractor terminal 404 to log in to the material information sharing system 3 and registers in the material DB 32 when making a proposal for the material to be used in the received construction work. Select the material to be used from the catalog information.
When the contractor wants to select a material whose catalog information is not registered in the material DB 32, the contractor has access rights to the material manufacturer terminal 406 for the inter-orderee information sharing system 2 and the material information sharing system 3. Is issued, and the material manufacturer terminal 406 is requested to register the catalog information and its link code.
The inter-orderee information sharing system 2 creates a material record of the selected material in cooperation with the material information sharing system 3.

  In step 115 (S115), the inter-orderee information sharing system 2 issues an access right to the created material record to the material maker terminal 406 of the selected material provider via the material information sharing system 3. Then, the material maker terminal 406 is requested to register the catalog information or link code of the selected material.

  In step 120 (S120), the material provider operates the material maker terminal 406, accesses the material record, and registers the requested material catalog information in the material information sharing system 3. When the catalog information of the requested material has already been registered, the material provider operates the material manufacturer terminal 406 to generate and register a link code corresponding to the material ID notified from the contractor. Is instructed to the material information sharing system 3. The material information sharing system 3 registers catalog information and / or generates a link code in accordance with an instruction from the material manufacturer terminal 406, and generates the generated link code in a material record (FIG. 4B). sign up.

  In step 125 (S125), the material information sharing system 3 transfers the link code (link information to catalog information) registered in the material record to the inter-ordering party information sharing system 2. The inter-ordering party information sharing system 2 adds the link code transferred from the material information sharing system 3 to the proposal file in the construction folder (meeting book folder 222 in FIG. 3C).

  In step 130 (S130), when the orderer operates the orderer terminal 402 and selects the proposal file in the meeting book folder 222 (FIG. 3C), the proposal form (described later with reference to FIG. 8). Is displayed on the orderer terminal 402. The orderer accesses the catalog information registered in the material DB 32 using the link code included in the proposal and confirms the detailed information on the material. In this way, by transmitting and receiving only the link code, it is possible to reduce the number of catalog information transfers to reduce the data transfer amount and to guarantee the originality of the catalog information.

  In step 135 (S135), when the orderer operates the orderer terminal 402 to perform the approval process for the proposal, the orderer terminal 402 receives the approval information for the proposal in the inter-orderee information sharing system 2. Upload to. The inter-orderer information sharing system 2 stores the approval information uploaded from the orderer terminal 402 as an approval file in the meeting book folder 222 (FIG. 3C), and from the orderer terminal 404 or the material manufacturer terminal 406. Make it viewable.

  In step 140 (S140), the contractor operates the contractor terminal 404 to request the material manufacturer terminal 406 (or the inspection organization terminal 408) to test the construction material. The test request may be made by the contractor terminal 404 transmitting the construction ID and the material ID to the material manufacturer terminal 406 or the like via the inter-orderee information sharing system 2 and the material information sharing system 3, The contractor terminal 404 may directly transmit the construction ID and the material ID to the material manufacturer terminal 406 or the like. The inter-ordering party information sharing system 2 issues an access right to the created material record via the material information sharing system 3 to the material maker terminal 406 (or inspection organization terminal 408) requested to test. Note that if the access right to the material record has already been given to the material manufacturer terminal 406 in order to register the link code of the catalog information, it is not necessary to issue the access right again.

In step 145 (S145), the quality inspector who has requested the test operates the material manufacturer terminal 406 (or the inspection organization terminal 408) to create a document file of the test result table. In this document file, the construction ID of the construction work notified from the contractor (other information for identifying the construction work) and the test result of the construction material notified from the contractor (that is, used in the construction work). Test results of construction materials).
In step 150 (S150), the material maker terminal 406 (or inspection organization terminal 408) applies a digital signature to the document file of the test result table and uploads the document file in accordance with the operation of the quality inspector. Log in to the shared system 3.

  In step 155 (S155), the material manufacturer terminal 406 (or inspection organization terminal 408) accesses the material record managed by the material information sharing system 3 based on the granted access right, and is given a digital signature. The test result table is registered in the material information sharing system 3. The material information sharing system 3 generates a link code to the registered test result table, and transmits the generated link code (link information to the test result table) to the inter-ordering party information sharing system 2. The ordering party information sharing system 2 registers the link code of the test report received from the material information sharing system 3 in the construction file (in the quality control folder in this example).

In step 160 (S160), when the contractor is requested to electronically deliver information related to the construction work, the contractor operates the contractor terminal 404 to store the information in the construction folder managed by the inter-orderee information sharing system 2. Data (for example, a link code to catalog information and a link code to a test report) are collected to create an electronic delivery folder.
In Step 165 (S165), the inter-orderer information sharing system 2 permits access to the created electronic delivery folder in response to a request from the orderer terminal 402, and provides a file in the electronic delivery folder. . The orderer confirms the file in the electronic delivery folder on the orderer terminal 402. For example, the orderer can access the test result table managed by the material information sharing system 3 by selecting and operating the link code of the test result table included in the electronic delivery folder. This test report is digitally signed, and the ordering party inquires the digital signature using an electronic authentication system, confirms whether or not the test report has been tampered with, and the issuer of the test report (quality inspector). ) Can be confirmed.

Next, the process of material proposal process (S110-S130 of FIG. 6) is demonstrated in detail.
FIG. 7 is a flowchart of the material proposal process (S20).
As shown in FIG. 7, in step 200 (S200), the contractor logs in to the inter-orderee information sharing system 2. At the time of login, since the construction work is designated by the contractor, the inter-ordering party information sharing system 2 specifies the construction ID. The authority management unit 530 of the construction management program 5 (FIG. 2) performs user authentication based on the user ID and password of the contractor and the construction ID, and the construction file associated with the construction ID according to the authentication result. And access to construction records.

In step 210 (S210), the contractor instructs the orderer to create a proposal file to discuss the construction material to be used. The construction record management unit 510 creates a proposal file in association with the construction ID in accordance with an instruction from the contractor, and further sends it to the material record management unit 610 via the DB linkage unit 520 and the information transfer unit 600. The material file associated with the construction ID is created.
In step 220 (S220), the contractor searches catalog information and the like registered in the material DB 32 and selects a desired construction material. The material record management unit 610 registers the material ID of the construction material selected by the contractor in the material file, and creates a material record of this construction material.
In step 230 (S230), when the material record is created by the material record management unit 610, the authority management unit 530 gives the access right to the material record to the material manufacturer terminal 406 of the provider of the selected construction material. Issue.

  In step 240 (S240), the material provider accesses the material record using the granted access right and instructs registration of the catalog information of the selected construction material. The material management program 6 uses the registered catalog information when the catalog information is already registered in the material DB 32, and requests the material provider to upload the catalog information in other cases. . When catalog information is uploaded from the material manufacturer terminal 406, the catalog registration unit 630 registers the uploaded catalog information in the material DB 32. The link generation unit 620 generates a link code to the uploaded catalog information (or catalog information that has already been registered), and outputs the generated link code to the material record management unit 610.

In step 250 (S250), the material record management unit 610 registers the link code generated by the link generation unit 620 in the material record.
In step 260 (S260), when the contractor finishes selecting the construction material to be used, the contractor proceeds to the process of S270, and further selects the construction material, returns to the process of S210 to perform the next construction. Select materials.
In step 270 (S270), when the contractor finishes selecting construction materials, the contractor inputs other bibliographic items (for example, a proposal date, an approval deadline, etc.) and instructs registration of a proposal file. The construction record management unit 510 acquires a catalog information link code (registered in the material record) from the material record management unit 610 in response to an instruction from the contractor, and from the acquired link code and the contractor. Is used to create a construction material proposal file, and the created proposal file is registered in the construction folder of the ordering DB 22 (in this example, a meeting book folder).

Once the construction material proposal file is registered in the meeting book folder, the orderer can view the proposal file. When the orderer logs in to the inter-orderee information sharing system 2 and accesses the proposal file, the construction record management unit 510 displays the proposal document illustrated in FIG. 8A according to the access from the orderer. The screen 8 is displayed on the orderer terminal 402.
As illustrated in FIG. 8A, the proposal display screen 8 includes a bibliographic item display area 800 on which a construction ID, a construction name, a proposal date, a title of the proposal, a drafter, and a work type are displayed. A link display area 810 for displaying a link button to the catalog information of the material, an approval button 820 for performing an approval operation on the proposal content, a change instruction button 830 for performing a change instruction operation on the proposal content, and the change content And a comment input area 840 for inputting the above. When the orderer clicks the link button in the link display area 810, the orderer terminal 402 accesses the catalog information in the material DB 32 based on the link information, and displays the catalog information as illustrated in FIG. 8B. To do. The displayed catalog information includes, for example, a material ID, a material name, a material manufacturer, a product number, a standard, a manufacturing date, and a raw material.

Next, the test result registration process (S140 to S155 in FIG. 6) will be described in more detail.
FIG. 9 is a flowchart of the test result registration process (S30). In this example, a case where a test is requested by a quality inspector of an inspection organization will be described as a specific example.
As shown in FIG. 9, in step 300 (S300), the contractor designates the construction work ID and the material ID of the construction material used in the construction work to the quality inspector of the inspection organization. Request material quality inspection. At this time, the access right to the material record corresponding to the construction ID and the material ID is given to the quality inspector who requested the quality inspection (test).
The quality inspector operates the inspection body terminal 408, and information on the construction material to be tested (material ID, material name, standard, etc.) and information on the construction work using the construction material (construction ID, construction work) Name, location where construction materials are used, etc.).
The construction information acquisition unit 700 (FIG. 5) creates a bibliographic item file including a construction ID and the like in response to an input operation by the quality inspector.

In step 310 (S310), the quality inspector operates the inspection organization terminal 408 and inputs the test result. The test information generation unit 710 creates a data file of a test result table (test result) according to an input operation from the quality inspector.
In step 320 (S320), the electronic signature unit 720 integrates the bibliographic item file created by the construction information acquisition unit 700 and the test result table data file created by the test information generation unit 710, and creates an integrated file. create. Therefore, the integrated file includes information related to the construction work such as the work ID, information related to the material such as the material ID, and the test result table.
In step 330 (S330), the electronic signature unit 720 calculates a hash value of the created integrated file.
In step 340 (S340), the electronic signature unit 720 encrypts the integrated file using its own private key, attaches the hash value to the encrypted integrated file, and outputs the encrypted file to the certificate adding unit 740.

In step 350 (S350), the certificate adding unit 740 attaches an electronic certificate to the integrated file (encryption and hash value addition) input from the electronic signature unit 720, and integrates the electronic certificate. The file is output to the test result registration unit 750. This electronic signature corresponds to a secret key used by the electronic signature unit 720. That is, this electronic signature is for certifying the issuer of the public key registered in the electronic authentication system, and the certified public key is paired with the private key used by the electronic signature unit 720.
In step 360 (S360), the test result registration unit 750 accesses the material information sharing system 3 (material information registration unit 640) of FIG. 1 based on the granted access right, and integrates the file (hash value and electronic value). (Encrypted file with certificate attached).
In step 370 (S370), the material information registration unit 640 (FIG. 2) registers the registered integrated file in the material DB 32 via the material record management unit 610.
In step 380 (S380), the link generation unit 620 generates a link code to the integrated file registered in the material DB 32, and uses the generated link code (link information to the integrated file) as the material corresponding to the access right. Register in the record. The link code registered in the material record (link information to the integrated file) is transferred to the ordering party information sharing system 2 (ordering order DB 22) and shared among the ordering parties.
In addition, when the construction material used as the object of quality inspection is comprised from the raw material which requires an inspection, you may add the inspection result (test result table) with respect to this raw material to an integrated file. As described above, the construction material used in the construction work and the raw material can be traced (trace) by collectively managing the test result table of the construction material and the test result table of the raw material.

As described above, the information sharing system 1 according to the present embodiment manages the information sharing system 2 between the ordering parties that realizes information sharing between the ordering parties of the construction work, the catalog information of the construction materials, and the test result table. By linking the material information sharing system 3 to each other, information on construction materials used in construction work can be shared among the orderer, the contractor, the material provider, and the quality inspector.
In particular, the information sharing system 1 of this example reduces the amount of data transfer by registering catalog information and test report (integrated file) in the material DB 32 and sharing the link information between the ordering parties. And guarantee the originality of catalog information and test report.
In addition, the information sharing system 1 of this example prevents the reuse of the test result table by managing the test result table in association with the construction work (construction ID). In particular, by combining the information (construction ID) that identifies the construction work and the test result table and electronically authenticating, the combination of the test result table of the construction material and the construction work using this construction material is authentic. Guaranteed to be.
In addition, the information sharing system 1 of this example synchronizes common items of document files input by the orderer, contractor, material provider, and quality manager so that the common items included in the plurality of document files are Eliminates the need for input and confirmation of common items.

[Modification]
Next, a modification of the above embodiment will be described.
In the above embodiment, the information sharing system 2 between the ordering parties that realizes information sharing between the ordering parties and the information provided from the material provider (material maker terminal) and the quality inspector (inspection organization terminal) are managed. The information sharing system 1 including the material information sharing system 3 has been described as a specific example. However, the information sharing system 1 is not limited to this example. For example, a system for managing information provided by a material provider and a quality inspector provide It may be separated from the system that manages the information to be processed. Moreover, a system of an intermediate supplier of construction materials such as a trading company may be added.

FIG. 10 is a diagram illustrating the second information sharing system 12. It should be noted that among the components shown in the figure, the same reference numerals are given to the components that are substantially the same as those shown in FIG.
As illustrated in FIG. 10, the second information sharing system 12 has a configuration in which a material supply intermediate sharing system 34 and a test information registration system 36 are added to the information sharing system 1 in FIG. 1.
The material supply intermediate sharing system 34 manages information provided from a material trading company terminal 410 used by an intermediate provider (trading company) of construction materials. More specifically, when the contractor designates a trading company and selects a material, the material sharing intermediate sharing system 34 gives the designated trading company the access right to the material file corresponding to this construction work. The material trading company terminal 410 of the trading company logs into the material supply intermediate sharing system 34 based on the granted access right, accesses the material record, and selects the selected material. When a material is selected by the material trading company terminal 410, the material supply intermediate sharing system 34 causes the material information sharing system 3 to create a material record, searches the catalog information of the selected material, and links the catalog information to the catalog information. Is registered in the material record. When the link code of catalog information is registered in the material record, the registered link code is transferred from the material information sharing system 3 to the inter-ordering party information sharing system 2 via the material supply intermediate sharing system 34.
The test information registration system 36 has a function of providing a test result table among the functions of the material information sharing system 3 illustrated in FIG.

It is a figure which illustrates the whole structure of the investigation assistance system. It is a figure which illustrates the functional structure of the construction information management program 5, and the functional structure of the material information management program 6. It is a figure which illustrates the information managed by the construction information management program 5. It is a figure which illustrates the information managed by the material information management program 6. (A) is a diagram illustrating a functional configuration of the test result registration program 7, and (B) is a diagram illustrating an integrated file 9 created by the test result registration program 7. It is a sequence diagram of information sharing operation (S10) in the information sharing system 1. It is a flowchart of material proposal processing (S20). (A) illustrates the proposal display screen 8 and (B) illustrates the catalog information display screen that is the link destination. It is a flowchart of a test result registration process (S30). It is a figure which illustrates the 2nd information sharing system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Information sharing system 2 ... Information sharing system between ordering parties 3 ... Material information sharing system 5 ... Construction information management program 6 ... Material information management program 7 ... Test result registration program 9 ... Integrated file

Claims (16)

An information sharing system including an orderer terminal of an orderer who orders a construction work, an orderer terminal of a contractor who orders the construction work, and a material provider terminal of a material provider who provides construction materials,
Material information storage means for acquiring material information related to construction materials from the material provider terminal and storing the acquired material information;
In response to an instruction from the contractor terminal, at least one material information is selected from the material information stored in the material information storage means, and link information for accessing the selected material information is generated. Link information generating means for
An information sharing system comprising: link providing means for providing the link information generated by the link information generating means to the orderer terminal. The contractor terminal identifies construction work, designates any construction material,
The link information generating means generates link information for browsing the material information of the designated construction material in association with the specified construction work,
The information sharing system according to claim 1, wherein the link providing unit provides the generated link information to the orderer terminal in association with a construction work associated with the link information. In response to an instruction from the contractor terminal, in a storage area of the material information storage unit, a record generation unit that generates a storage record associated with a construction work;
In accordance with an instruction from the contractor terminal, further comprising authority granting means for granting the storage authority for the storage record generated by the record generating means to the material provider terminal,
The material provider terminal stores the link information generated by the link information generating unit in a storage record associated with the construction work based on the storage authority granted by the authority granting unit,
The information sharing system according to claim 2, wherein the link providing unit provides link information stored in the storage record. This information sharing system includes a plurality of contractor terminals for a plurality of contractors who receive orders for the same construction work,
Each of the plurality of contractor terminals uses construction identification information for identifying the construction work, and shares information regarding the contents of the construction work with the orderer terminal,
Each of the contractor terminals uses the construction identification information and the identification information of any construction material to specify the construction work and specify the construction material,
The record generation means generates a storage record associated with the construction identification information for each construction material,
The information sharing system according to claim 3, wherein the link providing unit transmits link information stored in a storage record associated with the construction identification information to the orderer terminal in association with the construction identification information. The orderer terminal displays the material information using the link information provided from the link providing means according to the orderer's operation, and is specified by the orderer terminal according to the orderer's approval operation. The information sharing system according to claim 1, wherein approval information for generated construction material is generated. Construction information storage means for storing information relating to the contents of construction work input at the contractor terminal and the orderer terminal in association with construction identification information for identifying the construction work;
Material information registration for registering the material information of the construction material or the link information of the material information in the construction information storage means in association with the construction identification information when approval information for the construction material is generated by the orderer terminal The information sharing system according to claim 5, further comprising: means. The material information includes shipping source location information for specifying the location of the shipping source of the construction material,
The information on the content of the construction information includes site location specifying information for specifying the location of the construction site,
The environmental load calculating means for calculating an environmental load amount corresponding to a work for transporting construction materials based on the shipping source position information and the site position specifying information stored in the construction information storage means. Information sharing system. An information sharing system including an orderer terminal of an orderer who orders construction work, an orderer terminal of a contractor who orders this construction work, and an inspector terminal of a quality inspector who inspects the quality of construction materials. ,
The orderer terminal and the contractor terminal use the construction identification information for identifying the construction work, and manage information related to the construction work.
The inspector terminal generates quality information indicating an inspection result of a construction material used in construction work in association with the construction identification information in accordance with a quality inspector's operation,
Authenticity assurance means for assuring the authenticity of the combination of the generated quality information and the construction identification information associated with the quality information;
An information sharing system comprising: information providing means for providing the construction identification information and the quality information whose combination authenticity is guaranteed by the authenticity guaranteeing means to the orderer terminal. An information sharing system including an orderer terminal of an orderer who orders construction work and an orderer terminal of an orderer who orders construction work,
Construction information storage means for storing a document file edited by the orderer terminal or the orderer terminal in association with construction identification information for identifying construction work received and ordered between the orderer and the orderer; ,
Item attribute management means for storing common items common to two or more document formats for the document format edited by the orderer terminal or the contractor terminal;
When any common item of a document file is edited by the orderer terminal or the contractor terminal, the edited common item is included among a plurality of document files associated with the same construction identification information. An information sharing system comprising: common item management means for performing the same editing on the common items of other document files. Material information storage means for storing material information related to construction materials;
When a construction material is designated by a construction contractor, link generation that generates link information that enables browsing of the material information of the designated construction material among the material information stored in the material information storage means Means,
A material information providing apparatus comprising: link providing means for providing link information generated by the link generating means in association with the construction work. Information acquisition means for acquiring construction identification information for identifying construction work;
Quality information generating means for generating quality information indicating the inspection result of the construction material used in the construction work according to the operation of the user;
Data including the construction identification information and the quality information in a manner in which the authenticity of the combination of the construction identification information acquired by the information acquisition means and the quality information generated by the quality information generation means is guaranteed. Authenticity assurance means for generating a file;
A quality information providing apparatus comprising: information providing means for providing a data file generated by the authenticity guarantee means. Construction identification information for identifying construction work;
Quality information indicating the inspection results of construction materials, and
A data file configured in a manner in which the authenticity of the combination of the construction identification information and the quality information is guaranteed. An orderer terminal of an orderer who orders construction work, an orderer terminal of a contractor who orders this construction work, a material provider terminal of a material provider who provides construction materials, and a server device which manages information Information management method used,
The server device receives material information on construction materials from the material provider terminal,
The server device selects at least one material information from the received material information in response to an instruction from the contractor terminal or the material provider terminal,
The server device generates link information for accessing the selected material information,
The server device provides the generated link information to the orderer terminal. Information management method. An information management method using an orderer terminal of an orderer who orders construction work, an orderer terminal of a contractor who orders this construction work, and an inspector terminal of a quality inspector who inspects the quality of construction materials. And
The orderer terminal and the contractor terminal use the construction identification information for identifying the construction work, and manage information related to the construction work.
The inspector terminal generates quality information indicating an inspection result of a construction material used in construction work in association with the construction identification information in accordance with a quality inspector's operation,
The inspector terminal generates guarantee information indicating the authenticity of the combination of the construction work and the quality information based on the generated quality information and the construction identification information associated with the quality information,
The inspector terminal provides the generated guarantee information and the generated quality information to the orderer terminal in association with the construction identification information. In a computer that communicates with an orderer terminal of an orderer who orders construction work, an orderer terminal of an orderer who orders this construction work, and a material provider terminal of a material provider who provides construction materials,
Receiving material information on construction materials from the material provider terminal;
Selecting at least one material information from the received material information in response to an instruction from the contractor terminal or the material provider terminal;
Generating link information for accessing the selected material information;
A program for causing the computer to execute the step of providing the generated link information to the orderer terminal. In a system including an orderer terminal of an orderer who places an order for construction work and an orderer terminal of an orderer who orders this construction work, the orderer terminal and the orderer terminal identify the construction work. Use identification information to manage information about this construction work,
At least in a computer communicating with the orderer terminal,
Based on the quality information indicating the inspection result of the construction material used in the construction work and the construction identification information of the construction work using the construction material, warranty information indicating the authenticity of the combination of the construction work and the quality information is provided. Generating step;
A program for causing the computer to execute the step of providing the generated warranty information and the generated quality information to the orderer terminal in association with the construction identification information.

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