JP2007199832A - Unitary management system for work record or the like, and center system and external medium of service vendor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a unitary management system for a work record or the like capable of unitarily managing work receiving contents, the work recording, work confirmation result about a work target apparatus, and a center system and external medium of a service vendor. <P>SOLUTION: The unitary management system S of the work record or the like comprises the center system 2 and external medium 3 of the service vendor having a work result DB 20. When a service is received from a customer, the receiving contents of requested work is prevented from being modified and is recorded. A work procedure manual and a tool for confirming the work are prevented from being modified and are stored in an external medium 3. The work record and work confirmation result stored in the external medium 3 are prevented from being modified and are stored in the work result DB 20. The work receiving contents, work record, work confirmation result about the work target apparatus 10 can be unitarily managed on the center side of the service vendor. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a centralized management system, such as a work record specifying the installation position of a maintenance work target device for centrally managing work records performed by service vendor workers, work confirmation results, and the like, a service vendor center system, and an external medium It is.

There is no way for a person other than the worker to know directly whether the work performed by the service vendor worker on the work target device at the customer site is performed according to the work instruction.
At a later date, when trouble occurs at the customer's site, even if the customer asks the service vendor to confirm the work that has been performed on the work target device so far, it is a declaration of the worker himself, so the evidence ability There was a problem of lack.

  Conventionally, an estimate creation device that displays the presence or absence of abnormality of equipment and equipment after maintenance work at the work site is compared with a preset management value, and inquires and collects necessary parts information in the event of an abnormality It is disclosed in Document 1.

Also, Patent Document 2 discloses a method for confirming the normality of file update by comparing traffic before and after updating when a configuration file of a network device (switch) is updated remotely.
Japanese Patent Laid-Open No. 2001-5860 JP 2003-289181 A

  However, with what was disclosed by patent document 1, the numerical value of equipment is input into the portable terminal manually, and it cannot be shown that the numerical value is correct, and the reliability of the numerical value depends on the worker. End up.

In addition, in the one disclosed in Patent Document 2, it is possible for the customer to check the flow rate of traffic, which is effective for network devices.
However, it cannot be applied to operations such as server construction, setting change, and patch application.

  Therefore, an object of the present invention is made in view of the above circumstances, and accepts work on a work target device that is a record with high evidence ability for all work from service acceptance to reporting. A vast amount of data such as contents, work records, work confirmation results, etc. can be centrally managed at the service vendor's center, and work acceptance contents, work procedure manuals, work confirmation tools, work records, and work confirmation results are falsified. It is difficult to unify work records, etc. that can be taken out and presented only from the enormous records stored in the work result database, only necessary target information with high evidence ability, in response to requests for work confirmation from customers. It is to provide a management system, a service vendor center system, and an external medium.

  The centralized management system for work records, etc. of the present invention comprises a center system of a service vendor that performs work on work target equipment installed at a customer site, and an external medium that can be inserted into and removed from the work target equipment. A system that centrally manages the work acceptance contents, work records, work confirmation results, etc. for equipment, and the service vendor's center system has a work result database and is requested when a service is received from a customer. Means to prevent and record work acceptance contents, means to create work procedure manual and work confirmation tool from work acceptance contents after confirming authenticity of work acceptance contents, created work procedure manual and Means for preventing the alteration of the work procedure manual and the work confirmation tool after confirming the authenticity of the work confirmation tool, and storing the work procedure manual and the work confirmation tool in the external medium; After confirming the authenticity of the work records stored with prevention of tampering and the work confirmation results confirmed by the activation of the work confirmation tool, the work records and work confirmation results are prevented from being tampered with and stored in the work result database. And a means for performing the above.

  The centralized management system for work records, etc. according to the present invention is obtained by means for obtaining, from the time stamp certificate authority, a time stamp for proving the authenticity of the work procedure manual and work confirmation tool created by the center system of the service vendor. And means for giving a time stamp to the work procedure manual and work confirmation tool to prevent tampering.

  The centralized management system for work records and the like of the present invention requires that the service vendor's center system receives work records and work confirmation results from the work result database when a customer confirms work confirmation for the work target device. A means for extracting only the target information and a means for replying the work record and the work confirmation result to the customer after confirming the authenticity of the extracted work record and the work confirmation result are provided.

  In the integrated management system for work records and the like of the present invention, the external medium is a WORM (Write Once Read Many) type recording medium in which data can be written only once.

  The center system of the service vendor of the present invention has a work result database, and when accepting a service from a customer, means for preventing and recording the received work content, and the authenticity of the work content. After confirmation, after confirming the authenticity of the work procedure manual and work confirmation tool from the work acceptance contents and the authenticity of the created work procedure manual and work confirmation tool, falsification prevention of the work procedure manual and work confirmation tool And stored in an external medium that can be inserted into and removed from the work target device installed at the customer's site, work records stored in the external medium in a manner that prevents tampering, and confirmation by activation of the work confirmation tool. And a means for preventing falsification of work records and work confirmation results and storing them in the work result database after confirming the authenticity of the work confirmation results. It is intended.

  The external medium of the present invention can be inserted into and removed from a work target device installed at a customer site, the work procedure manual and the work confirmation tool are stored in a tamper-prevented manner, and the work record is stored in a tamper-proof manner. The work confirmation result confirmed by the activation of the work confirmation tool is stored while preventing falsification.

  As described above, according to the present invention, for all work from service reception to reporting, work acceptance contents, work records, and work confirmation results for work target devices that are records with high evidence capabilities. Such a large amount of data can be centrally managed by the service vendor's center, and it is difficult to tamper with work reception details, work procedure manuals, work confirmation tools, work records, and work confirmation results. Centralized management system such as work records that can extract and present only the necessary target information with high evidence ability from the enormous records stored in the work result database, and the center system of service vendors And an external medium can be obtained.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  The centralized management system S for work records and the like of the present invention includes a service vendor center system 2 that performs work on a work target device 10 installed at a customer 1 and an external medium 3 that can be inserted into and removed from the work target device 10. In other words, this is a system that centrally manages the work acceptance contents, work records, work confirmation results, and the like for the work target device 10.

  In the integrated management system S for work records etc. of the present invention, the center system 2 of the service vendor has a work result database (Data Base; DB) 20.

  The centralized management system S for work records and the like of the present invention includes means for preventing the contents of the requested work from being tampered with and recorded when the center system 2 of the service vendor accepts the service from the customer. After confirming authenticity, means to create work procedure manual and work confirmation tool from work acceptance contents, work procedure manual and work confirmation tool after confirming authenticity of created work procedure manual and work confirmation tool After confirming the authenticity of the work confirmation result confirmed by the means for storing the data in the external medium 3 and preventing the falsification, the work record stored in the external medium 3 and preventing the falsification, and the activation of the work confirmation tool, And means for preventing the work record and the work confirmation result from being tampered with and storing them in the work result database 20.

  The centralized management system S for work records and the like of the present invention is a means for the service vendor center system 2 to obtain from the time stamp certification authority 4 a time stamp that proves the authenticity of the work procedure manual and work confirmation tool that has been created, And means for giving the acquired time stamp to the work procedure manual and the work confirmation tool to prevent falsification.

  The centralized management system S for work records and the like of the present invention corresponds to the work records and work confirmation results from the work result database 20 when the center system 2 of the service vendor is requested to confirm the work on the work target device 10 by the customer. A means for extracting only necessary target information and a means for replying the work record and the work confirmation result to the customer after confirming the authenticity of the extracted work record and the work confirmation result are provided.

  In the integrated management system S for work records and the like of the present invention, the external medium 3 is a WORM (Write Once Read Many) type recording medium in which data can be written only once.

  The center system of the service vendor according to the present invention has a work result database 20 and, when receiving a service from a customer, means for preventing and recording the received work content, and authenticity of the work content. After confirming the above, after confirming the authenticity of the work procedure manual and work confirmation tool created from the work acceptance contents, and the authenticity of the created work procedure manual and work confirmation tool, the work procedure manual and work confirmation tool have been altered. Means for storing in the external medium 3 that can be inserted into and removed from the work target device 10 installed at the customer's site 1, work records stored in the external medium 3 to prevent tampering, and activation of the work confirmation tool After confirming the authenticity of the work confirmation result confirmed by the above, the work record and the work confirmation result are prevented from being tampered with and stored in the work result database 20.

  The external medium of the present invention can be inserted into and removed from the work target device 10 installed at the customer 1, the work procedure manual and the work confirmation tool are stored in a tamper-proof manner, and the work record is stored in a tamper-proof manner. The work confirmation result confirmed by the activation of the work confirmation tool is stored while preventing falsification.

FIG. 1 is a system configuration diagram showing an integrated management system for work records and the like according to an embodiment of the present invention.
As shown in FIG. 1, the unified management system S for work records and the like includes a center system 2 of a service vendor and an external medium 3 that can be inserted into and removed from a work target device 10 installed in a customer 1.

  As shown in FIG. 1, a plurality of work target devices 10 are installed at the customer 1.

  The service vendor center system 2 has a work result database 20.

  The time stamp certification authority 4 performs time stamp issuance and time stamp verification.

  When the service vendor's center system 2 receives a service from a customer, the received content of the requested work is prevented from being falsified and recorded.

  Based on the contents of work acceptance, a work procedure manual and a work confirmation tool are created at the center of the service vendor.

  The created work procedure manual and work confirmation tool are stored in the external medium 3 while preventing falsification.

The worker of the service vendor goes to the customer 1 with the external medium 3, inserts the external medium 3 into the work target device 10, and performs work based on the work procedure manual.
The work record is stored in the external medium 3 while preventing falsification.

At the end of the work, the service vendor worker activates a work confirmation tool stored in the external medium 3 to prevent falsification and confirms whether the work has been performed correctly.
The work confirmation result executed by the work confirmation tool is automatically stored in the external medium 3 while preventing falsification.

  The worker of the service vendor pulls out the external medium 3 from the work target device 10 and takes it home, stores the work record and the work confirmation result in the work result database 20 of the center system 2 of the service vendor, and stores the work target. The work vendor's center side centrally manages the work acceptance contents, work records, work confirmation results, etc. for the device 10.

  When the customer confirms the work on the work target device 10, the center system 2 of the service vendor extracts only the corresponding target information that is a necessary part of the work record and the work confirmation result from the work result database 20. After confirming the authenticity of the extracted work record and work confirmation result, the work record and work confirmation result are returned to the customer.

  In the integrated management system for work records and the like of the present invention, the work record reliability is not dependent on the worker because the work check tool is executed to check whether the work record is normal or abnormal.

  Further, the centralized management system for work records and the like of the present invention can be applied to work such as server construction, setting change, and patch application.

FIG. 2 is a main flowchart illustrating the flow of work processing in the centralized management system for work records and the like according to the embodiment of the present invention.
In the process started in step S100, first, when a service is received from a customer (customer), the contents of the work requested by the center system 2 of the service vendor are recorded.
The work acceptance content cannot be tampered with (step S101).

Next, after confirming the authenticity of the work acceptance content, a work procedure manual / work confirmation tool is created based on the work acceptance content.
The work procedure manual / work confirmation tool cannot be tampered with in the same manner as described above (step S102).

  Next, after confirming the authenticity of the created work procedure manual / work confirmation tool, the work procedure manual / work confirmation tool is stored in the external medium 3 (step S103).

Next, the worker of the service vendor performs the work based on the work procedure manual while inserting the external medium 3 into the work target device 10 installed at the customer 1 and taking a work record.
The work record is prevented from being falsified (step S104).
Here, the worker of the service vendor performs work on all work target devices 10 installed in the customer 1.

Next, at the end of the work on the work target device 10, the worker of the service vendor inserts the external medium 3 into the work target device 10 to confirm the work, and activates the work confirmation tool stored in the external medium 3, The work record is confirmed as to whether the work has been correctly performed by the work confirmation tool, and the work confirmation result is stored in the external medium 3.
The work confirmation result cannot be tampered with (step S105).
Here, the worker of the service vendor performs work confirmation on all work target devices 10 to be confirmed.
Further, the work confirmation result is NG, and the process returns to step S104 only when the work record is reviewed.

Next, the worker of the service vendor pulls out the external medium 3 from the work target device 10, takes the extracted external medium 3 back from the customer to the company, and authenticates the work records and work confirmation results stored in the external medium 3. After confirming, the work record and the work confirmation result are stored in the work result database 20 of the center system 2 of the service vendor, and the work record and the work confirmation result are centrally managed on the service vendor center side (step S106).
Ensure that work records and work confirmation results cannot be tampered with.

  Thereafter, in response to a work confirmation request from the customer for the work target device 10, the service vendor center system 2 extracts the relevant target information, which is a necessary part of the work record and the work confirmation result, from the work result database 20 and extracts the work. After confirming the authenticity of the record and the work confirmation result, the work record and the work confirmation result are returned to the customer (step S107).

FIG. 3 is a flowchart for explaining the flow of processing when a service is received from a customer in the integrated management system for work records and the like according to the embodiment of the present invention.
The process when the service is received from the customer (step S200), first, the service vendor center system 2 records the received content of the work requested by the customer, and assigns a reception number to the received content (step S201). Next, falsification of the reception record such as the reception contents and the reception number is prevented and a falsification detection flag of the reception record is given (step S202).

An example of the received contents recorded in step S201 is shown in FIG.
FIG. 3 shows an example of the falsification detection flag of the reception record given to the reception record in step S202.

FIG. 4 is a flowchart for explaining the flow of processing when creating a work procedure manual / work confirmation tool in the unified management system for work records and the like according to the embodiment of the present invention.
In the process for creating the work procedure manual / work confirmation tool (step S300), it is first determined whether or not the reception record has been tampered with (step S301).

If the reception record has not been tampered with (step S301 “YES”), a work procedure manual / work confirmation tool is created from the reception record (step S302).
The work procedure manual / work confirmation tool is created for each device manually or automatically.

  Thereafter, the created work procedure manual / work confirmation tool is prevented from being falsified, and the work procedure manual / work confirmation tool is provided with a falsification detection flag (step S303).

  If the reception record has been falsified (step S301 “NO”), the service vendor administrator is warned that the reception record has been falsified (step S304).

An example of the work procedure manual created in step S302 is shown in FIG.
An example of the work confirmation tool created in step S302 is shown in FIG.
Further, FIG. 4 shows an example of a falsification detection flag of the work procedure manual / work confirmation tool given to the work procedure manual / work confirmation tool in step S303.

FIG. 5 is a flowchart for explaining the flow of processing when storing the work procedure manual / work confirmation tool in the centralized management system for work records and the like according to the embodiment of the present invention.
When the work procedure manual / work confirmation tool is stored (step S400), it is first determined whether the work procedure manual / work confirmation tool has been tampered with (step S401).

  If the work procedure manual / work confirmation tool has not been tampered with (step S401 “YES”), the external medium 3 is selected (step S402), and then the external medium 3 is sent to the center system 2 of the service vendor. It is determined whether it is connected (step S403).

  If the work procedure manual / work confirmation tool has been tampered (“NO” at step S401), the service vendor administrator is warned that the work procedure manual / work confirmation tool has been tampered with (step S404). ).

  Here, when the external medium 3 is connected to the service vendor's center system 2 (step S403 “YES”), it is determined whether there is any other information in the external medium 3 (step S405).

  If the external medium 3 is not connected to the center system 2 of the service vendor (step S403 “NO”), the process returns to step S402.

  If there is no other information in the external medium 3 (step S405 “YES”), the work procedure manual / work confirmation tool is stored in the external medium 3 (step S406).

  If the external medium 3 contains other information (step S405 “NO”), the process returns to step S402.

That is, in step S405, it is confirmed whether other information such as other work procedure manuals remains in the external medium 3 to be used.
This is because if other information such as another work procedure remains in the external medium 3 to be used, another information such as another work procedure may be used by mistake.

FIG. 6 is a flowchart for explaining the flow of processing when performing work in the centralized management system for work records and the like according to the embodiment of the present invention.
Processing at the time of performing work (step S500), first, the external medium 3 is connected to the work target device 10 installed in the customer 1 (step S501), then work recording is started (step S502), and then The work procedure manual is displayed on the display screen, and the worker of the service vendor performs the work based on the work procedure manual on the work target device 10 (step S503).
The work record is stored in the external medium 3.

  Next, the work record is terminated, work record falsification prevention and work record falsification detection flags are added (step S504), and then a service vendor worker removes the external medium 3 from the work target device 10 (step S504). S505).

  An example of a work record alteration detection flag given to the work record in step S504 is shown in FIG.

FIG. 7 is a flowchart for explaining the flow of processing when confirming work in the centralized management system for work records and the like according to the embodiment of the present invention.
The process at the time of confirming the work (step S600) is as follows. First, the worker of the service vendor connects the external medium 3 to the work target device 10 ′ for confirming the work (step S601), and then stored in the external medium 3. The work confirmation tool is activated, and it is determined whether or not the work record is a work confirmation result obtained by the work confirmation tool (step S602).

Here, when the work record is a work confirmation result of a correct work (step S602 “OK”), the normality of the work record is displayed (step S603).
The work confirmation result is stored in the external medium 3.

  Next, prevention of falsification of the work confirmation result and addition of a falsification detection flag of the output result of the work confirmation tool are performed (step S604), and then the worker of the service vendor removes the external medium 3 from the work target device 10 ′ ( Step S605).

  If the work record is not the result of the work confirmation that the work has been performed correctly (step S602 “NG”), the service vendor is warned of the review of the work record (step S606).

An example of the output result of the work confirmation tool in step S602 is shown in FIG.
FIG. 7 shows an example of a falsification detection flag of the output result of the work confirmation tool added to the output result of the work confirmation tool in step S604.

FIG. 8 is a flowchart for explaining the flow of processing when centrally managing work records and work confirmation results in the work record and other central management system according to the embodiment of the present invention.
In the process for centrally managing work records and work confirmation results (step S700), it is first determined whether the work records and work confirmation results have been tampered with (step S701).

  If the work record and the work confirmation result have not been tampered with (step S701 “YES”), the work record and the work confirmation result are stored in the work result database 20 of the center system 2 of the service vendor together with the tampering prevention flag (step S701). S702).

  If the work record and the work confirmation result have been tampered with (step S701 “NO”), the service vendor administrator is warned that the work record and the work confirmation result have been tampered with (step S703).

FIG. 9 is a flowchart for explaining the flow of processing at the time of a work confirmation request for a work target device from a customer in the unified management system for work records etc. according to the embodiment of the present invention.
The processing at the time of requesting work confirmation for the work target device 10 from the customer (step S800), first, the customer name, reception number, system name, work date, etc. are specified (step S801), and then the center system of the service vendor The corresponding target information, which is a necessary part of the work record and work confirmation result, is obtained from the work result database 20 of step 2 (step S802), and then it is determined whether the obtained work record and work confirmation result have been tampered with (step S802). S803).

  If the work record and the work confirmation result have not been tampered with (step S803 “YES”), the work record and the work confirmation result are returned to the customer (step S804).

  If the work record and the work confirmation result have been tampered with (step S803 “NO”), the service vendor administrator is warned that the work record and the work confirmation result have been tampered with (step S805).

FIG. 10 is an explanatory diagram when a tampering prevention flag is created by the time stamp certificate authority in the centralized management system for work records and the like according to the embodiment of the present invention.
The service vendor's center system (own system) 2 calculates a hash value from the recording file 21 and stores the calculated hash value.
Then, the service vendor center system 2 requests the time stamp certification authority 4 to issue a time stamp.

  The time stamp certification authority 4 generates a time stamp for the hash value and issues the generated time stamp to the center system 2 of the service vendor.

  The center system 2 of the service vendor acquires a time stamp from the time stamp certification authority 4.

  In the integrated management system for work records and the like of the present invention, a falsification detection flag such as a hash value and a time stamp is added to a record file such as a reception record, a work procedure manual / work confirmation tool, a work record, and a work confirmation result. As given.

  The recording file 21 is recorded on a one-time writable recording medium to prevent tampering, and then a tampering detection flag (hash value, time stamp, etc.) is added to the recording file 21, Prove authenticity.

Here, the hash value is a fixed-length pseudo-random number generated from a given original text by a hash function.
A hash function is an irreversible one-way function.

  The original text cannot be reproduced from the hash value, and it is extremely difficult to create different data having the same hash value.

  Time stamps are applied to communication encryption assistance, user authentication, digital signatures, and the like.

  That is, to prevent falsification of the recording file 21, for example, the recording file 21 is stored in a WORM (Write Once Read Many) type recording medium.

  Further, in order to confirm the alteration check of the recording file 21, a hash value and a time stamp are given to the recording file 21, and the hash value and the time stamp are stored together with the recording file 21.

FIG. 11 is an explanatory diagram when tampering verification is performed by the time stamp certificate authority in the centralized management system for work records and the like according to the embodiment of the present invention.
The center system (own system) 2 of the service vendor recalculates the hash value from the recording file 21, and compares and verifies the recalculated hash value and the stored hash value.
Then, the center system 2 of the service vendor requests the time stamp certification authority 4 to verify the time stamp.

  The time stamp certification authority 4 verifies the time stamp stored in the center system 2 of the service vendor.

  The center system 2 of the service vendor obtains the time stamp verification result stored from the time stamp certification authority 4.

  That is, when verifying the tampering check, the hash value is calculated again from the recording file 21 and is confirmed to be the same as the stored hash value.

  Further, when a time stamp is added, the time stamp certificate authority 4 verifies the stored time stamp and confirms that the recording file 21 has not been tampered with.

As described above in the embodiment, the features of the present invention are as follows.
(1) The service vendor can keep records with high evidence ability (tampering prevention and third-party authentication) for all work from service acceptance to reporting.
Since the work record is confirmed by the work confirmation tool created in advance by the service vendor center side and the work confirmation result is output, it is difficult to falsify the work record.
(2) Since all work records are centrally managed by the service vendor's center, when the work request for the work target device is received from the customer after the work is completed, the work acceptance details, work procedure manual, Work records, work confirmation results, etc. can be presented to the customer immediately.
(3) Even when work is requested from a service vendor of another company, the work confirmation result with high evidence ability can be shown to the customer.
(4) Even if the work record is enormous, it is possible to extract only the target information that the customer wants to know by filtering with the work result database of the center system of the service vendor.

1 is a system configuration diagram showing an integrated management system for work records and the like according to an embodiment of the present invention. The main flowchart figure explaining the flow of the process of the operation | work in the integrated management system, such as a work record, concerning the Example of this invention. The flowchart figure explaining the flow of a process when the service is received from the customer in the integrated management system such as work records according to the embodiment of the present invention. The flowchart figure explaining the flow of a process at the time of preparation of the work procedure manual / work confirmation tool in the integrated management system such as work records according to the embodiment of the present invention. The flowchart figure explaining the flow of a process at the time of storage of the work procedure manual / work confirmation tool in the integrated management system such as work records according to the embodiment of the present invention. The flowchart figure explaining the flow of a process at the time of implementation of the operation | work in the integrated management system, such as a work record based on the Example of this invention. The flowchart figure explaining the flow of a process at the time of the confirmation of the operation | work in the integrated management system, such as a work record based on the Example of this invention. The flowchart figure explaining the flow of a process at the time of unifying management of the work record and work confirmation result in a unified management system, such as a work record, concerning the Example of this invention. The flowchart figure explaining the flow of a process at the time of the request | requirement of the work confirmation about the work object apparatus from the customer in the integrated management system, such as a work record concerning the Example of this invention. Explanatory drawing at the time of preparation of the tampering prevention flag by the time stamp certification | authentication authority in the integrated management system, such as a work record concerning the Example of this invention. Explanatory drawing at the time of verification of the tampering check by the time stamp certification | authentication authority in the integrated management system, such as a work record concerning the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Customer 2 Center system of service vendor 3 External medium 4 Time stamp certification authority 10, 10 'Work object apparatus 20 Work result database 21 Record file S Centralized management system, such as work record

Claims (6)

A service vendor center system that performs work on work target equipment installed at a customer site and an external medium that can be inserted into and removed from the work target equipment. A system that centrally manages work confirmation results, etc.
The service vendor's center system has a work result database, and when accepting a service from a customer, after confirming the authenticity of the work acceptance content, means for preventing and recording the requested work acceptance content After confirming the authenticity of the work procedure manual and work confirmation tool based on the contents of the work received, and the authenticity of the created work procedure manual and work confirmation tool, prevent alteration of the work procedure manual and work confirmation tool. After confirming the authenticity of the means for storing in the external medium, the work record stored in the external medium while preventing falsification, and the work confirmation result confirmed by the activation of the work confirmation tool, the work record and work An integrated management system for work records, etc., comprising means for preventing confirmation results from being tampered with and storing them in the work result database.   The center system of the service vendor includes means for acquiring a time stamp that proves the authenticity of the created work procedure manual and work confirmation tool from the time stamp certificate authority, and the obtained time stamp as a work procedure manual and work confirmation tool. An integrated management system for work records and the like according to claim 1, further comprising means for preventing tampering.   The center system of the service vendor includes means for extracting only the necessary target information corresponding to the work record and the work confirmation result from the work result database when the work confirmation for the work target device is requested by the customer, and the extracted work. The integrated management system for work records and the like according to claim 1, further comprising means for replying the work records and the work confirmation results to the customer after confirming the authenticity of the records and the work confirmation results.   2. The system for managing work recording and the like according to claim 1, wherein the external medium is a WORM (Write Once Read Many) type recording medium in which data can be written only once.   Having work result database, when receiving service from customers, means to prevent and record the requested work acceptance content, and confirm the authenticity of the work acceptance content, then work procedure from work acceptance content The work target installed at the customer's site with the work procedure manual and work confirmation tool being tampered with, after confirming the authenticity of the created work procedure manual and work confirmation tool After confirming the authenticity of the means for storing in an external medium that can be inserted into and removed from the device, the work record stored in the external medium to prevent tampering, and the work confirmation result confirmed by the activation of the work confirmation tool And a service vendor center system comprising means for preventing alteration of work records and work confirmation results and storing them in the work result database. It can be inserted into and removed from the work target equipment installed at the customer's site, the work procedure manual and the work confirmation tool are stored in a tamper-prevented manner, the work record is stored in a tamper-proof manner, and the work confirmation tool is activated. An external medium characterized in that confirmed work confirmation results are stored in a manner that prevents tampering.

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