JP2003030026A - Data managing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make more efficient access to data which is managed by a folder having tree structure. SOLUTION: The folder having the tree structure is stored in a data storage part 110 in a server 100. Many users access the server 100 by terminals 201 to 205 connected with a network 300. Access privileges are set to individual users by unit of branch of the tree structure about a group of folders stored in the data storage part 110 in an access privilege setting part 130. When the access from a specific user is made, an access control part 120 refers to the access privileges in the access privilege setting part 130, determines a branch of which the access privileges are owned by the user and a branch equivalent to a high-order layer of the branch as a branch to be presented to the user, presents only the branch to be presented to the user and makes the user access it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data management device, and more particularly, to data used by a plurality of users.
The present invention relates to a data management device for storing and managing a folder having a tree structure.

[0002]

2. Description of the Related Art With the development of the information industry, various kinds of information are accumulated as digital data in various fields and are used by computers. In particular, a general company uses a system in which a database for accumulating various kinds of information is constructed in a server device and a large number of client devices can access the database via a network. . in this way,
In order to operate a database system capable of providing data to a large number of users via a network, a data management device for storing and managing the data is required. When managing various types of data used by a plurality of users, a folder having a tree structure is usually used. The individual data are
It is housed and managed in a specific folder, but this folder can be housed in another folder, and a large number of nested folders make it possible to efficiently store various types of data. A management method is adopted. The entire image of a folder group having such a complicated hierarchical structure is generally represented by a tree structure. Usually, the user is presented with a group of folders having this tree structure.
The user can find a folder accommodating desired data by tracing this tree structure from the upper hierarchy to the lower hierarchy. In practice, displaying all the folders that make up the tree structure at one time complicates the display screen. Therefore, a typical data management device currently in use can only display necessary folders according to user operations. It has a function to display lower layers (so-called folder opening / closing function).

[0003]

As described above, when the data used by a plurality of users is managed by a folder having a tree structure, the user can trace the tree structure to obtain the desired data. You can find the folder that contains the data. However, as the number of users who use the same database increases, the data unrelated to the user also increases, and the work of accessing the desired data must be complicated. In addition, an accident occurs in which data that should not be originally accessed is mistakenly accessed and the content is inadvertently modified.

Therefore, an object of the present invention is to provide a data management device capable of more efficiently accessing data managed by a folder having a tree structure.

[0005]

[Means for Solving the Problems] (1) A first aspect of the present invention is for storing data used by a plurality of users in a folder having a tree structure and storing the data, and managing the data. In a data management device, a data storage unit that stores individual data to be managed in a predetermined folder in a folder group having a tree structure and stores the data, and a user uses the data in the data storage unit. For the terminal device to be accessed at the time and the individual user, the access right is set for each folder group stored in the data storage unit in branch units of the tree structure, and the set access right is set. Section and when a specific user accesses from the terminal device, the access right for the user stored in the access right setting section is referred to, and the user is permitted to access. The branch having the access right and the branch corresponding to the upper hierarchy of this branch are defined as the target branch for presentation to the user, the target branch for presentation is presented to the user through the terminal device, and based on the instruction from the user. , An access control unit that allows only access to folders and data included in the presentation target branch, and even when the same data in the data storage unit is accessed, it differs for each individual user. The tree structure is presented and the access by the user is limited to the range of folders and data included in the presented tree structure.

(2) A second aspect of the present invention is the above-mentioned first aspect.
In the data management device according to the aspect,
An access right setting unit and an access control unit are provided in a server device, and a client device connected to the server device via a network is used as a terminal device.

(3) A third aspect of the present invention is the above-mentioned second aspect.
In the data management device according to this aspect, when the user performs the work of logging in from the client device to the server device by using a predetermined account, the access permission by the access control unit is started, and the work of logging out is performed. In addition, it is configured so that the access permission by the access control unit is terminated, and when the login work is performed by the access control unit, a temporary folder that can be temporarily used by the logged-in user is created, The temporary folder is added to the presentation target branch and presented to the user for use, and when the logout operation is performed, the process of deleting the temporary folder and its contents is performed.

(4) A fourth aspect of the present invention relates to the above-mentioned first aspect.
~ In the data management device according to the third aspect, in the folder group having a tree structure stored in the data storage unit, a personal folder to be used by each individual user is provided, the access control unit However, when the presentation target branch is presented in response to access from a specific user, as for the personal folders, only the personal folders for the particular user are presented.

(5) A fifth aspect of the present invention relates to the above-mentioned fourth aspect.
In the data management device according to this aspect, each personal folder is provided with a different folder name corresponding to each user so as to be distinguishable from each other, and the access control unit When presenting a personal folder for a user, instead of presenting different folder names, a common folder name for all users is presented.

(6) A sixth aspect of the present invention relates to the above-mentioned first aspect.
-In the data management device according to the fifth aspect, information indicating the omission setting is recorded for a specific folder, and the access control unit presents the presentation target branch according to the access from the user. When performing, the presentation of the folder in which the information indicating the omission setting is recorded is omitted.

(7) A seventh aspect of the present invention is based on the above-mentioned sixth aspect.
In the data management device according to this aspect, when the presentation of a specific folder is omitted, the elements included in the omitted folder are arranged and presented at the hierarchical position of the omitted folder. It is the one.

(8) An eighth aspect of the present invention relates to the above-mentioned first aspect.
~ In the data management device according to the seventh aspect, a database is built in the data storage unit, the access control unit has a search function for the database, and the terminal device can access the database within the range included in the presentation target branch. In this way, it can be used as a database system.

(9) A ninth aspect of the present invention relates to the above-mentioned first aspect.
As a data management device according to an eighth aspect, a program for causing a computer to function is prepared so that the program can be recorded in a computer-readable recording medium and distributed.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on illustrated embodiments.

§1. Basics of the data management device according to the present invention
Configuration FIG. 1 is a block diagram showing the basic configuration of a data management device according to an embodiment of the present invention. This device includes a server device 100 and a client device 200 (terminal devices 201 to 201).
205) is connected via the network 300. Here, for convenience of illustration, an example in which one server device 100 and five client devices (terminal devices) 201 to 205 are connected to the network 300 is shown, and each terminal device 201 to 205 is a user. It shall be operated by U01 to U05. However, when using it in an actual company,
A larger number of client devices 200 are connected to the network 300 for use. Also, a plurality of server devices 100 can be installed as required.

Here, an example of using this data management device as an in-house database system will be shown.
More specifically, an example of using as an in-house database system for use in printing a product catalog in a printing company will be shown. In the case of this example, the server device 100 and a large number of client devices 2
00 is connected via a network 300 composed of an in-house LAN, and an employee who is a user is a client device 2
00 can be used as a terminal device to access a database built in the server device 100.

As shown in the figure, in the server device 100,
A data storage unit 110, an access control unit 120, and an access right setting unit 130 are provided. However, each of these constituent elements is obtained by extracting each function on the software of the server device 100 as an element, and
It does not correspond to the actual hardware components. The data storage unit 110 is a component that stores data to be managed, and has a function of storing individual data to be managed in a predetermined folder in a folder group having a tree structure. have. In the case of this embodiment, in the data storage unit 110, a product information database regarding products to be published in the product catalog created by the printing company is constructed, and image data, bibliographic data, etc. regarding many products are stored. There is. The access control unit 120 uses the client device 200 (the terminal device 201 in the illustrated example) via the network 300.
When any of the data from any one of 205 to 205) accesses the specific data in the data storage unit 110, it has a function of determining whether or not to permit this access and performing access control.

The feature of the present invention lies in this access control unit 12.
0 is a unique access control function. This access control function is realized by referring to the access right set in the access right setting unit 130. The access right setting unit 130 has a function of setting the access right for each user for each folder group stored in the data storage unit 110 on a branch unit basis of the tree structure and storing the set access right. is doing. When a specific user accesses the server device 100 from the client device 200, the access control unit 120 refers to the access right for the user stored in the access right setting unit 130, and the user accesses the access right. The branch having the right and the branch corresponding to the upper layer of this branch are defined as the presentation target branch for the user, and the presentation target branch is presented to the user via the client device 200, and
Based on an instruction from the user, it fulfills the function of permitting only access to the folders and data included in the presentation target branch. Hereinafter, such a function will be described with reference to a concrete example.

FIG. 2 is a tree structure diagram showing an example of a product information database stored in the data storage unit 110. As described above, in this embodiment, in the data storage unit 110, the product information database regarding the products to be published in the product catalog created by the printing company is constructed, and the image data and the bibliographic data ( Files such as product names, product codes, dimensions, functions, prices, etc.) are stored in a predetermined folder. At the bottom of the tree structure diagram (right side of each branch), a product folder for each product is located. Image data and bibliographic data files for each product are stored in this product folder. It is stored. For example, the image data and bibliographic data files for the product A1 are stored in the folder "product A1" drawn on the right end of the first line of the tree structure diagram.

A folder called "product information" is placed at the top level of this tree structure diagram, and functions as a root folder including all other folders. In this tree structure diagram, a hierarchical structure composed of a large number of branches is formed by branching from the root folder "product information" to the right. Specifically, a "general" folder and a "specific" folder are placed immediately below the root folder "product information".
In the case of this example, information about products that are generally sold nationwide is stored in the "general" folder, and information about products that are specifically sold for each district is stored in the "specific" folder.

In the hierarchy immediately below the "General" folder,
Folders "series A" and "series B" are placed so that commonly sold products can be classified and stored according to series. In the layer immediately below the "series A" folder, there are "product A1" folder and "product A2" folder for storing information about two products A1 and A2 belonging to this series A. In the layer immediately below the "Series B" folder, there is a "Product B1" folder for storing information about the three products B1, B2, B3 belonging to this Series B,
A "product B2" folder and a "product B3" folder are placed. In each of these folders, the image data and bibliographic data for each product are stored.
As already mentioned.

On the other hand, in the layer immediately below the "specific" folder, there are three district folders "Kanto", "Kansai", and "Chubu". Each of these folders contains information about products that are sold specifically in the Kanto, Kansai, and Chubu districts. A "public" folder, a "user U01" folder, and a "user U02" folder are placed immediately below the "Kanto" folder. Here, the "public" folder is a folder whose contents are made public to all users who have the access right to the "Kanto" folder, whereas the "user U01" folder and the "user U02" are respectively the user U01. It is a personal folder that is opened only to the user U02. The folders "Series C" and "Series D" are placed immediately below the "Public" folder so that the products that are sold specially in the Kanto area can be classified and stored according to series. . In the hierarchy immediately below the "Series C" folder, 2 belonging to this Series C
The "product C1" folder and the "product C2" folder for accommodating the information about one product C1 and C2 are placed, and the two immediately below the "series D" folder belong to this series D. A "commodity D1" folder and a "commodity D2" folder for accommodating information about the commodities D1 and D2 are placed.

Similarly, in the hierarchy immediately below the "Kansai" folder, the "Public" folder, the "User U03" folder,
A "user U04" folder is placed. The "public" folder is a folder whose contents are made public to all users who have the access right to this "Kansai" folder, while the "user U03" folder and the "user U" folder.
The “04” folder is a personal folder opened only to the user U03 and the user U04, respectively.
There is a folder named "Series E" that is sold specifically in the Kansai area in the layer immediately below the "Public" folder, and in the layer immediately below it is the Series E 2
A “commodity E1” folder and a “commodity E2” folder for accommodating information about one product E1 and E2 are placed.

Further, a "public" folder and a "user U05" folder are placed immediately below the "central part" folder. The “public” folder is a folder whose contents are disclosed to all users who have the access right to this “central part” folder, while “user U0”
5 ”is a personal folder that is open only to the user U05. Just below the "Public" folder,
There is a folder called "series F" that is sold specially in the Chubu region, and the "product F1" for accommodating information about two products F1 and F2 belonging to this series F is located immediately below the folder. A folder and a “commodity F2” folder are placed.

As described above, the "series A" folder and the "series B" folder are placed in the hierarchy directly below the "general" folder, whereas the hierarchy directly below the "specific" folder is in the hierarchy. , "Series C" to "series F" folders are not placed directly, because it is necessary to perform classification by a plurality of district folders and classification with personal folders. Hereinafter, assuming that a product information database having a tree structure as shown in FIG. 2 has already been constructed in the data storage unit 110, the five product users database U01 to U05 each have a terminal device 201. An example of use will be described with reference to 205. Of course, the process of constructing such a product information database must already be performed by the administrator of this data management device. Administrator is network 3
By logging in to the server device 100 using the account and password for the administrator via 00 and giving an instruction to the access control unit 120 such as a new folder creation process and a new data storage process, data storage A product information database will be built in the section 110.

Now, in the data management device according to the present invention,
In order to allow the five users U01 to U05 to use the product information database built in the data storage unit 110, it is necessary to set the access right for each user in the access right setting unit 130 in advance. There is. Here, let us consider a case where, for example, the access right as shown in FIG. 3A is set to each user. This table defines access rights for the contents of the "general" folder and the "specific" folder shown in FIG. 2 for each user. For the “general” folder, either the access right (○) or the absence (×) is shown, and the “specific” folder is shown for each district as shown by the broken line in FIG. Group G1, G2, G
The groups that define 3 and have access rights are listed. Specifically, the users U01 and U02 are given the access right to the "general" folder and the access right to the group G1 ("Kanto" folder) in the "specific" folder. , The access right to the "general" folder and the access right to the group G2 ("Kansai" folder) in the "specific" folder are given. For the user U04, the group G2 (" The access right to the "Kansai" folder) is given, and the access right to the group G3 ("Chubu" folder) in the "specific" folder is given to the user U05. Also, all access rights are given to the administrator.

With respect to the database having the tree structure as shown in FIG. 2, defining the access right as shown in FIG. 3 (a) means that the folder stored in the data storage unit 110 is set for each user. For groups, it is nothing but setting access rights on a branch-by-branch basis in a tree structure. A folder group having a tree structure as shown in FIG. 2 is composed of a large number of branches. Here, each branch will be expressed by the folder name of the highest hierarchy included in the branch. For example, branch "product information" is "product information"
Means a branch that includes all folders under the folder (the branch that makes up the entire product information database), and the branch "general" is
All folders under the "General" folder ("General",
"Series A", "Series B", "Product A1", "Product A2", "Product B1", "Product B2", "Product B3"
Each of the folders).

If the access right shown in FIG. 3A is expressed as an access right for each branch of the tree structure, a table as shown in FIG. 3B is obtained. For example, users U01 and U
For 02, the access right to the branch “general” and the access right to the branch “Kanto” are given. Similarly, for the user U03, the access right to the branch “general” and the access right to the branch “Kansai” are given,
The user U04 has been given access to the branch "Kansai", and the user U05 has the branch "Chubu".
Access is granted. Further, the administrator is given the right to access the branch “product information”. The access right setting unit 130 stores access right information in branch units as shown in FIG. 3B, and the access control unit 120 refers to such access right information to access control information. To execute.

A characteristic of the access control performed by the access control unit 120 is that it adopts a policy of "not presenting folders without access rights". If different access rights are set for individual users as in the example shown in FIG. 3, each user will be presented with only the folders to which he / she has access rights. The appearance of the product information database in the section 110 is different.

For example, the user U01 is the terminal device 201.
Consider a case in which the product information database in the data storage unit 110 is accessed using. in this case,
The user U01 first performs a work of logging in to the server device 100 using a predetermined account. The access control unit 120 recognizes that the user U01 is logged in based on the account at the time of logging in, and requests the input of a predetermined password. When the user U01 inputs the password, the access control unit 1
20 recognizes whether or not the entered password is correct from the correspondence relationship between the previously recorded account and the password, and if the password is correct, the login is a valid login. Will be admitted.

When the user U01 makes a valid login, the access control unit 120 determines that the access right setting unit 1
By referring to the access right to the user U01 stored in 30, the branch to which the user U01 has the access right and the branch corresponding to the upper layer of this branch are defined as the presentation target branch for the user U01, and this presentation target branch is the terminal. Device 201
The process of presenting it to the user U01 is performed via. Figure 4
It is a figure which shows the content of the goods information database which is actually presented to user U01. Comparing with the whole image of the product information database shown in FIG. 2, it can be seen that some folders are hidden in the presentation content shown in FIG. As shown in FIG. 3B, the user U01 is given the access right to the branch “general” and the branch “Kanto”.
Therefore, for the user U01, the branch “general” and the branch “Kanto” that have the access right, and the branches corresponding to the upper layers of these branches are presented as the presentation target branches. The branch corresponding to the upper hierarchy of the branch "general" is the branch that connects the "product information" folder and the "general" folder, and the branch corresponding to the higher hierarchy of the branch "Kanto" is the "product information" From the folder to the "Specific" folder, then to "Kanto"
This is the branch of the part connected to the folder. The presentation content shown in FIG. 4 presents only such presentation target branches.

Similarly, the presentation contents when the users U02 to U05 log in through the terminal devices 202 to 205 are shown in FIGS. 5 to 8, respectively. In each case, the branch to which each user has an access right and the branch corresponding to the upper hierarchy of this branch are defined and presented as the presentation target branch. In addition,
When logged in as an administrator, the entire image of the tree structure shown in FIG. 2 is presented. As described above, in the present invention, although the contents of the same product information database constructed in the data storage unit 110 are presented as a tree structure, the contents presented to each user are different. After all, since the portion of the entire tree structure to which the user does not have the access right is not presented, the user does not recognize the existence of the folder to which the user does not have the access right. While viewing the contents of the presented tree structure, the user can access the files in the folder (operations such as reading, writing, and creating new files) within the presented range, and change from one folder to another. The operation to move the file to the folder will be executed. Access control unit 12
0 has a function of permitting only access to folders and data included in the presentation target branch based on an instruction from the user.

As described above, the presentation target branch is determined according to the access right of each user, and only the folder on the presentation target branch is presented for each user.
The advantage of is that by omitting the presentation of unnecessary folders that do not have access rights and selectively presenting only the necessary folders, the task of finding the desired file becomes easier. The illustrated example is a simple example in which at most five users use the same product information database, but as the number of users who use the same database increases, the data unrelated to oneself also increases. Therefore, the work of accessing the desired data must be complicated. In the data management device according to the present invention, even if the number of users increases, folders presented to individual users are
Since it is always narrowed down to the necessary folders, efficient access is possible.

In the present embodiment, a product information database is built in the data storage unit 110, and the access control unit 120 has a search function for this product information database. Therefore, this data management device functions as a database system.
However, the search by the access control unit 120 is performed only within the range included in the presentation target branch for the accessing user. For example, user U
01 performs a predetermined file search using some keyword, the search range by the access control unit 120 is not the entire range in the product information database shown in FIG. 2 but the presentation range for the user U01 shown in FIG. Is narrowed down to. Therefore, a more efficient search becomes possible.

The second merit of selectively presenting only necessary folders to each user is originally
The point is that it is possible to prevent accidents in which data that should not be accessed is mistakenly accessed and the content is inadvertently modified. For example, user U
When 01 accesses the product information database in the data storage unit 110, only the contents shown in FIG. 4 are presented to the user U01. Therefore, the user U01 has the “Kansai” folder and the “Chubu” folder. It will not be recognized.

§2. Addition of data management device according to the present invention
Functions The basic functions of the data management device according to the present invention have been described above in §1. Here, some additional functions of this data management device will be described.

(1) Handling of Personal Folder As described above, in the data management apparatus according to this embodiment, individual users are stored in the folder group having the tree structure stored in the data storage unit 110. There is a personal folder for each to use. Specifically, in the product information database shown in FIG. 2, personal folders “user U01” to “user U05” for use by each of the five users U01 to U05 are prepared. Each of these personal folders is arranged within the range of the access right of each user, and naturally, when each user accesses this product information database, each user is presented with his / her own personal folder. Will be done. However, in this embodiment, two exceptional handlings are performed for this personal folder. The first exceptional handling is that when the access control unit 120 presents the presentation target branch in response to an access from a specific user, regarding the personal folders, only the personal folders for the specific user are concerned. The second exceptional treatment is that each personal folder is given a different folder name corresponding to each user so as to be distinguishable from each other. When presenting a personal folder for a particular user to the specific user, the access control unit 120 does not present a different folder name originally assigned, but instead presents a common folder name for all users. This is a point to be presented. Hereinafter, these two exceptional treatments will be described with reference to specific examples. For example, the presentation content shown in FIG. 4 is the presentation content to the user U01, but in reality, the content of the group G1 shown by the broken line in FIG. 4 and the content of the group G1 shown by the broken line in FIG. 2 are slightly different. ing. Since the user U01 has the access right for the branch "Kanto", the portion of the branch "Kanto" shown in FIG. 2 should be presented as it is to the user U01. Yes, the group G1 in Figure 2 is exactly the same,
It should be presented as group G1 also in FIG. However, in reality, the "user U01" folder and the "user U0" existing in the group G1 in FIG.
The “2” folder is not presented in the group G1 in FIG. 4, and instead, the “personal” folder and the “basket” folder are presented (the “basket” folder will be described later). Here, the folder named "personal" shown in FIG. 4 is actually the folder named "user U01" shown in FIG.
The contents are the same folder. However, when presented, the name has been changed from "user U01" to "personal". Further, in FIG. 4, the folder corresponding to “user U02” is not displayed at all. On the other hand, the presentation content shown in FIG. 5 is the presentation content to the user U02,
The contents of the group G1 shown by the broken line in FIG. 5 and the contents of the group G1 shown by the broken line in FIG. That is, the "user U01" folder and the "user U02" folder existing in the group G1 in FIG. 2 are not presented in the group G1 in FIG. 4, and instead, the "personal" folder and the "basket" are used. Folders and are presented. Here, when the presentation content to the user U01 shown in FIG. 4 and the presentation content to the user U02 shown in FIG. 5 are compared, the presentation content is completely the same formally. However, in effect, the contents of the two folders, the "Personal" folder and the "Basket" folder,
Both are completely different. The "basket" folder will be described later, and the difference between the "personal" folders will be described here. Both the "personal" folder shown in FIG. 4 and the "personal" folder shown in FIG. 5 are folders presented with a common folder name of "personal". The content is completely different. That is, as shown in parentheses, the substance of the “personal” folder shown in FIG. 4 is actually the “user U01” folder, and the entity of the “personal” folder shown in FIG. The entity is actually "user U0
2 "folder. Similarly, the substance of the "personal" folder shown in FIG. 6 is actually the "user U03" folder, and the substance of the "personal" folder shown in FIG. 7 is actually "user". User U04 "folder,
The substance of the “personal” folder shown in FIG. 8 is actually the “user U05” folder. In this way, on the screen showing the contents to be presented to each user (the screen displayed on each terminal device), the folder indicated by the name "personal" is actually an individual for the user. It will be a folder for. In each actual personal folder created on the product information database in the data storage unit 110,
For example, different folder names corresponding to individual users are given so that they can be distinguished from each other, such as "user U01" to "user U05". In the present embodiment, the above-mentioned two exceptional treatments are performed for these personal folders. That is, when a specific user makes an access, even if it is within the range of the access right of the specific user, this is not presented for another person's personal folder, and for his own personal folder, Instead of the original folder name, a common folder name for all users (in this example, a "personal" folder name) is presented. After all, as shown in FIG. 2, in the group G1, there are two personal folders “user U01” and “user U02”. However, if there is access from the user U01, “user U02” is displayed. "User U
By changing only "01" to a folder name of "personal" and presenting it, the presentation content as shown in FIG. 4 can be obtained. If the user U02 makes an access, the "user U01" folder is not presented,
By changing only the “user U02” to the “personal” folder name and presenting it, the presentation content as shown in FIG. 5 can be obtained. Originally, personal folders were
This folder is for individual users to use for personal use, there is no need to access the personal folders of others, and it is necessary to avoid accidentally accessing the personal folders of others. In the present embodiment, since only the personal folder of the user is presented, the personal folders of other people are not accessed. Further, each personal folder is one element that constitutes the product information database, and when stored in the data storage unit 110, different folder names corresponding to individual users are used so that they can be identified from each other. It is necessary to give it. However, if the personal folder is presented by the actual folder name, the visibility of the personal folder as a personal folder is diminished from the standpoint of each user. Therefore,
In the present embodiment, when presenting this personal folder, instead of using the original actual folder name, a “personal” folder name that is common to all users is used to improve visibility. According to the present embodiment, each user is presented with only the personal folder of the user himself / herself with respect to the personal folder, so there is no problem even if the folder name is changed and presented.

(2) Creation and Deletion of Temporary Folder Next, the "basket" folder shown in FIGS. 4 to 8 will be described. This "basket" folder is not actually any folder that constitutes the product information database shown in FIG. The “basket” folder presented to the user in the present embodiment is, so to speak, a temporary folder created for each user at the time of login. As described above, when the user starts accessing the server device 100 from the terminal device, it is necessary to log in to the server device 100 using a predetermined account. As described above, the login task requires the input of a password. After the user logs in, the access control unit 120 allows the user to access under a predetermined condition until the user logs out. The “basket” folder is a temporary folder created so as to be used by the user during the temporary period from the login to the logout. After all, the access control unit 12
0 creates a temporary folder that can be temporarily used by the logged-in user when the login operation is performed, adds this temporary folder to the presentation target branch, and presents it to the user for use. It will be. In this embodiment, this temporary folder is created at the same hierarchical position as the "personal" folder. Of course, at the time of presentation, the created temporary folder is presented as a folder with the name "basket". And
When a user logs out, this "basket" temporary folder and its contents are
It will be erased by the access control unit 120.
During the access period from login to logout, the user can use this "basket" temporary folder
It can be used as a temporary storage place for data files and folders. However, it will be deleted when you log out, so before logging out, this "basket"
Necessary information in the folder must be officially stored in another folder.

(3) Folder Omission Various folders are arranged in various hierarchical positions in the folder group having the presentation tree structure. Then, in the present invention, only the part related to the presentation target branch for each user is selectively presented in the entire tree structure. However, even from the user's point of view, not all folders are required, even if they are placed on the presentation target branch. From the user's point of view, there are folders where it is preferable to omit the presentation. Here, a modified example in which the presentation of a part of the folders arranged on the presentation target branch is omitted will be described. As described above, in order to omit the presentation of a part of the folders, information indicating the omission setting is recorded in advance for the specific folder to be omitted, and the access control unit 120 However, when the presentation target branch is presented according to the access from the user, the presentation may be omitted for the folder in which the information indicating the omission setting is recorded. Specifically, elements such as folders and data files included in the folder to be omitted may be arranged and presented at the hierarchical position of the folder to be omitted. Let me show this with a concrete example. For example, in Figure 2.
Among the folders that make up the product information database as shown in, "General" folder, "Specific" folder, "Kanto" folder, "Kansai" folder, "Chubu" folder,
Suppose you have recorded information indicating the default setting in the "Public" folder. In this case, the presentation contents shown in FIGS. 4 to 8 are changed to the presentation contents shown in FIGS. 9 to 13, respectively. For example, in the case of the example shown in FIG. 4, since the “public” folder is a folder to be omitted, the “public” folder is placed at the hierarchical position of the “public” folder.
The "series C" folder and the "series D" folder included in the folder will be placed, and the "specific" folder and the "kanto" folder are folders to be omitted. Immediately below the "Product information" folder, the "Series C" folder and the "Series D" folder are upgraded, and similarly, the "Personal" folder and the "Basket" folder are also upgraded to the same position, as shown in FIG. Content is obtained.
Compared with the presentation content shown in FIG. 4, the presentation content shown in FIG.
The presentation of extra folders is omitted, so the contents are easier to read. In this way, by omitting settings for folders that are considered unnecessary from the user's point of view (for example, the administrator can make the omission settings in advance), the folders can be displayed when presented to the user. It is possible to further improve the visibility.

(4) Actual Presentation Screen Some examples of the presentation contents when presenting the tree structure of the product information database constructed in the data storage unit 110 to each user so far are shown in FIGS. It has been shown in 13. FIG. 14 shows an example of a display screen on an actual terminal device including the presentation contents regarding such a tree structure. In the illustrated example, the display screen is divided into three screens, a folder display screen W1, a file display screen W2, and a detailed content display screen W3. The folder display screen W1 is presented with the tree structure shown in FIGS. The user selects an arbitrary folder to be accessed from the folders presented on the folder display screen W1. The figure shows a state in which the “Product A2” folder is selected. If one folder is selected from the folder display screen W1, the file display screen W2
Displays a list of files contained in the selected folder. In the case of this embodiment, three types of names can be set for each file,
The file display screen W2 has a name of 1 and a name of 2
The name of the street is displayed. As for the image file, a thumbnail showing the outline of the image is displayed in the file display screen W2. The user selects an arbitrary file to be accessed from the files displayed on the file display screen W2. In the figure, the product A2 is a "stationery set" product, and image files of a plurality of stationery items are stored in the "product A2" folder, and the file with the name 1 "A202" is selected from them. The state is shown. 1 from within this file display screen W2
When one file is selected, the detailed content display screen W3 displays the detailed content of the selected file. In the illustrated example, an image based on the selected image file is displayed, and bibliographic items regarding this image file are displayed. In this way, the display screen is divided into three screens W
When the product information database constructed in the data storage unit 110 is accessed by software which is divided into 1, W2 and W3 and displays necessary information in each screen, the folder group The area for presenting the tree structure is limited to the folder display screen W1, and it is not always possible to secure a sufficient display area. The present invention is suitable for use under such a condition, and it becomes possible to carefully select and present the information regarding the folder necessary for the user in the area of the limited area of the folder display screen W1. .

[0041]

As described above, according to the data management apparatus of the present invention, it is possible to more efficiently access the data managed by the folder having the tree structure.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a data management device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a tree structure for a group of folders constituting a product information database constructed in a data storage unit 110 shown in FIG.

FIG. 3 is a table showing an example of access rights set in an access right setting unit 130 shown in FIG.

4 is a terminal device 2 operated by a user U01 shown in FIG.
It is a figure which shows an example of the presentation content with respect to 01.

5 is a terminal device 2 operated by a user U02 shown in FIG.
It is a figure which shows an example of the presentation content with respect to 02.

6 is a terminal device 2 operated by a user U03 shown in FIG.
It is a figure which shows an example of the presentation content with respect to 03.

7 is a terminal device 2 operated by a user U04 shown in FIG.
It is a figure which shows an example of the presentation content with respect to 04.

8 is a terminal device 2 operated by a user U05 shown in FIG.
It is a figure which shows an example of the presentation content with respect to 05.

9 is a terminal device 2 operated by a user U01 shown in FIG.
It is a figure which shows the modification of the presentation content with respect to 01.

FIG. 10 is a diagram showing a modified example of the presentation content for the terminal device 202 operated by the user U02 shown in FIG.

FIG. 11 is a diagram showing a modified example of the presentation content for the terminal device 203 operated by the user U03 shown in FIG.

FIG. 12 is a diagram showing a modified example of the presentation content for the terminal device 204 operated by the user U04 shown in FIG. 1.

FIG. 13 is a diagram showing a modified example of the presentation content for the terminal device 205 operated by the user U05 shown in FIG. 1.

14 is a diagram showing an example of an actual display screen on the terminal devices 201 to 205 shown in FIG.

[Explanation of symbols]

100 ... Server device 110 ... Data storage unit 120 ... Access control unit 130 ... Access right setting unit 200 ... Client device (terminal device) 201 ... Terminal device operated by user U01 202 ... Terminal device operated by user U02 203 ... Terminal device operated by user U03 204 ... Terminal device operated by user U04 205 ... Terminal device operated by user U05 300 ... Network G1 to G3 ... Group to be accessed W1 ... Folder display screen W2 ... File display screen W3 ... Detailed content display screen

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat (reference) G06F 17/30 419 G06F 17/30 419A F term (reference) 5B017 AA03 BA06 CA16 5B075 KK07 KK43 KK54 KK63 5B082 EA01 EA11 EA11 GA11

Claims (9)

[Claims] 1. A data management device for accommodating and storing data used by a plurality of users in a folder having a tree structure and managing the data, wherein individual data to be managed are A data storage unit that stores and stores each in a predetermined folder of a folder group having a tree structure, a terminal device that the user accesses when using the data in the data storage unit, and an individual user On the other hand, with respect to the folders stored in the data storage unit, an access right setting unit for setting the access right for each branch of the tree structure and storing the set access right, and a specific user accessing from the terminal device When referring to the access right for the user stored in the access right setting unit, the branch to which the user has the access right is displayed. Branches corresponding to the upper hierarchy of the branch, defined as presentation target branch for the user, while presenting to the user the presented objects branch via the terminal device,
A data management device comprising: an access control unit that permits only access to a folder and data included in the presentation target branch based on an instruction from the user. 2. The data management device according to claim 1, wherein a data storage unit, an access right setting unit, and an access control unit are provided in a server device, and a client device connected to the server device via a network is a terminal device. A data management device characterized by being used as. 3. The data management device according to claim 2, wherein when a user uses a predetermined account to log in from the client device to the server device, access permission by the access control unit starts. It is configured so that the access permission by the access control unit is terminated when the work of logging out is performed, and the access control unit can be temporarily used by the logged-in user when the work of logging in is performed. Create a temporary folder, add the temporary folder to the presentation target branch and present it to the user for use, and perform a process of deleting the temporary folder and its contents when a logout operation is performed. A data management device characterized by. 4. The data management apparatus according to claim 1, wherein a folder group having a tree structure stored in the data storage unit is used by an individual user for personal use. A folder is provided, and when the access control unit presents the presentation target branch in response to an access from a specific user, regarding the personal folder, only the personal folder for the specific user is presented. A data management device having a function. 5. The data management device according to claim 4, wherein the individual folders can be identified from each other.
Different folder names corresponding to individual users are given, and when the access control unit presents a personal folder for the user to the user, instead of presenting the different folder names, A data management device characterized by presenting a common folder name for all users. 6. The data management device according to any one of claims 1 to 5, wherein information indicating an omission setting is recorded for a specific folder, and the access control unit allows access from a user. According to the data management apparatus, the presentation of the presentation target branch is omitted for the folder in which the information indicating the omission setting is recorded. 7. The data management device according to claim 6, wherein when presentation of a specific folder is omitted, an element included in the folder to be omitted is located at a hierarchical position of the folder to be omitted. A data management device characterized by arranging and presenting. 8. The data management device according to claim 1, wherein a database is built in the data storage unit, and the access control unit is provided with a search function for the database, within a range included in the presentation target branch. The data management device is characterized in that the terminal device can access the database and can be used as a database system. 9. A program for causing a computer to function as the data management device according to claim 1, or a computer-readable recording medium recording the program.