JPH06250907A - Supporting device for distributed cooperative work - Google Patents

Abstract

PURPOSE:To provide a distributed cooperative work supporting device for exclusively cooperation-processing shared data in a distributed information processing system connected by a network. CONSTITUTION:A server system 2 processing shared data with a client system 1 executing an interactive processing with a user is provided. A shared data management-part 7 manages the operation right of respective pieces of data. The client system 2 requests the operation right to the server system 1 at the time of updating data, and shared data transferred from a shared data storage part 8 is operated in a data storage part 10. Data update information is transmitted to the server system 2 on a real time basis, and data of the shared data storage part 8 is updated. Data update information is stored in the shared data storage part, and it is referred to by the other client system 11, and data of a data storage part in the other client system 11 is udpated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed collaborative work support system, and more particularly to a distributed collaborative work support system which is effective in exclusive and cooperative processing of shared data in a distributed information system.

[0002]

2. Description of the Related Art Conventionally, this type of distributed information system is known as a distributed database. Normally, different users are not allowed to handle the same data. When one user updates the data, the other can access the data only after confirming the operation completion of the operator who updated the data. For example, Japanese Patent Publication 6
The one described in Japanese Unexamined Patent Publication No. 3-80345, "Shared Control Method of Distributed Database Management System" is known. FIG. 6 shows the configuration of the distributed database management system of the above publication.

When a use request for a file on a database is issued to the database management system from an interactive processing program or an application program existing on the database request system, first the database management means manages the distributed database use request. It is sent to the file management means of the system, and the exclusive control means is requested to occupy the file. The exclusive control means refers to the occupied state of the file and avoids simultaneous access to the file even for a plurality of requests.

After that, the file management means reads the corresponding file in the database, transfers it, and stores it in the database of the database request system. The search / update is performed on the database in the database request system, and after the work is completed, it is transferred from the database of the database request system to the database of the database management system, confirmed, and stored.

[0005]

In the shared control method of the conventional distributed database management system, when one user is updating data, the other user is prohibited from accessing the corresponding data, and Since the data update information is not communicated, it is not possible to confirm the status during the update.

[0006] In view of the above points, an object of the present invention is to perform cooperative work while performing exclusive control of data update in a distributed system while communicating the state of data update to other systems in real time. An object of the present invention is to provide a distributed cooperative work support device that can be used.

[0007]

A distributed cooperation support apparatus of the present invention is a distributed cooperation work support apparatus in a distributed information processing system having a plurality of first systems and second systems connected by a network, The first system includes a user interface unit for converting user input into data processing information, a data storage unit for storing the data processing information, and data update information issued by the user interface unit and another system. First data for transmitting and receiving the data update information between a data management unit that updates data in the data storage unit based on the data management unit and a second system for exchanging the data update information with another system A second data transfer unit having a transfer unit, wherein the second system transmits and receives the data update information to and from the first system. A shared data storage unit that stores data shared between a plurality of the first systems, and a shared data management unit that updates the data in the shared data storage unit based on the data update information, To do.

[0008]

In the present invention, the user interface section of the first system converts the input from the user into data processing information and presents the updated data in the data storage section to the user, and the data transfer section The data management unit transmits / receives data processing information to / from the second system, and the data management unit updates the data in the data storage unit from the data processing information in the user interface unit and the data transfer unit.

The data transfer section of the second system transmits and receives the data processing information to and from the corresponding first system, and the shared data management section stores the data of the shared data storage section from the data processing information of each data transfer section. Update.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, a distributed cooperative work support device is a client system 1 that interactively processes user operations.
And a server system 2 that performs communication processing with the client system. One server system is composed of an arbitrary number of client systems.

The client system 1 transmits / receives data processing information to / from the user interface unit 3 that performs user input / output processing, the data management unit 4 that updates data in the data storage unit 10, and the server system 2. The data transfer unit 5 is included.

The server system 2 comprises a data transfer unit 6 for transmitting / receiving data processing information to / from the client system 1, and a shared data management unit 7 for updating data in the shared data storage unit 8. There is. When there is another client system 11, the data transfer unit 9 corresponding to the client system 11 is also included.

Next, the operation of the distributed cooperative work system of the present embodiment thus constructed will be described with reference to FIG. The operation will be described in the order of three stages of starting the client system, requesting the data operation right, and updating the data.

When the client system 1 is activated, a connection request 51 is transmitted from the data transfer section 5 to the server system 2. In the server system 2, when there is a connection request,
In the connection request acceptance 71, the corresponding data transfer unit 6 is activated 61. Furthermore, the shared data management unit 7 assigns an ID to the client system 1 that has made the connection request, and secures a communication data area corresponding to the client system 1 in the shared data storage unit 8. On the client system 1 side, the data management unit 4 holds 41 the system ID.

When data processing of data managed by the client system 1 is performed in cooperation with another client system 11, a shared data registration request 31 is generated. The data management unit 4 reads out required data 42 from the data storage unit 10, and is transmitted from the data transfer unit 5 to the server system 2. In the server system 2, the data transfer unit 6 receives the data, the shared data management unit 7 stores the shared data in the shared data storage unit 8, and the new data sharing registration 72 is performed. Further, the data is transmitted from the data transfer unit 9 to another client system 11 (a data transmission method will be described later).

The data not held by the client system 1 is stored in the shared data storage unit 8 of the server system 2. The shared data management unit 7 of the server system 2 reads out the required shared data 73 from the shared data storage unit 8 and transmits it from the data transfer unit 6 to the client system 5. In the client system 1, the data transfer unit 5 receives the data, the data management unit 4 stores the shared data 43 in the data storage unit 10, and displays the shared data 32.

The target data of the cooperative work is held in the data storage unit 10 on the client system 1 side and the shared data storage unit 8 on the server system 2 side with the same contents.

Next, in the client system 1,
A case where the user interface unit 3 issues a data update request will be described with reference to FIG. First, when the data update request 33 is issued, the data management unit 4
Referring to the data operation right 44, if the data operation right 44 is not held, the data transfer unit 5 requests the server system 7 for the data operation right 74.

In the server system 2, when the data transfer unit 6 receives a request for the data operation right, the shared data management unit 7 refers to the operation right of the data, and another client system holds the operation right of the data. If not,
The shared operation right lock 75 is performed so that another client cannot hold the operation right of the data, and the data transfer unit 6 notifies the request client of the permission to hold the data operation right. If another client is already operating the data, the data transfer unit 6 notifies the requesting client that holding of the data operation right is not permitted.

In the client system 1, when the data transfer unit 5 is notified that the data operation right is permitted, the data management unit 4 records the data operation right holding 45 and displays the shared data operation right request result display 34. To do.

The case where the data updating work is completed will be described with reference to FIG. When the data update work is completed in the client system 1, the shared data operation right release 35 is issued, the data management unit 4 releases the data operation right 46, and the data transfer unit 5 notifies the server system 2 of this. . In the server system, the data transfer unit 6
However, when the shared data management unit 7 receives the notification of the release of the data operation right, the shared data management unit 7 may confirm that the client system ID possessed by the locked data operation right and the client system ID which issued the release request match. For example, the lock of the data operation right is released and the shared data operation right is released 76.

Next, the data update work will be described with reference to FIG. In the client system 1, the user interface unit 3 issues a data update request 36, and the data management unit 4 refers to the data operation right,
When the data operation right is held, the data is updated.

The data management unit 4 updates 47 the data in the data storage unit 10 based on the update request from the user interface unit 3. Furthermore, the data update request is notified to the server system via the data transfer unit 5.

In the server system 2, when the data transfer section 6 receives a data update request, the shared data management section 8
Updates the shared data portion 77. In addition, in order to notify another client of the data update request, it is stored in the communication area of each client in the shared data.

In another client, the issued data update request is stored in the corresponding communication data area in the shared data storage unit 8 of the server system 2, and therefore there is an update request to be communicated in that area. In this case, the shared data management unit 7 reads the data update information 78 and communicates with the client system 1 via the data transfer unit 6.

In the client system 1, when the data transfer unit 5 receives a data update request 48 from the server, the data management unit 4 updates the data in the data storage unit 10 and shares it via the user interface unit. The data display 37 is performed to notify the operator.

In this way, the client system 1
Can refer to the shared data operated by another client system 11 in real time via the server system 2.

On the other hand, at the time of updating data, if the data update information is not transferred to the server system, the function is the same as that of the conventional shared database sharing control method.

In the above embodiment, the case where the number of client systems is one has been mainly described, but it goes without saying that distributed cooperative work can be realized even if there are a plurality of client systems.

[0031]

As described above, in the distributed collaborative work support apparatus according to the present invention, data updates in a client are communicated to other clients in real time.
There is an effect that a collaborative work becomes possible while another operator at a remote place observes the work progress of the operator.

Further, since the server uniformly manages the data access right at the time of updating the data, the data exclusive right is guaranteed until the release request is issued even if the data update request is received from another client. , It has an effect of preventing data inconsistency between distributed systems.

Further, even in the work in which the functions are distributed, since the data is updated locally, the operation of the user is promptly reflected on the image display, and the interactivity is improved.

In the case of operating a plurality of related data between distributed systems, if the shared data in the server system is operated, the user interactivity is lowered, but the cooperative work of a plurality of operators is required. The effect is that it is possible with the same time delay.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram for explaining data control when the client system is started in the distributed cooperative work support device shown in FIG.

FIG. 3 is a diagram for explaining a process of requesting an operation right for performing exclusive control of data in the distributed cooperative work support device shown in FIG.

FIG. 4 is a diagram for explaining a process of releasing an operation right for performing exclusive control of data in the distributed cooperative work support device shown in FIG. 1.

FIG. 5 is a diagram for explaining a data update work in the distributed cooperative work support device shown in FIG. 1.

FIG. 6 is a diagram for explaining a shared control method in a shared control method of a conventional database management system.

[Explanation of symbols]

1, 11 Client system 2 Server system 3 User interface unit 4 Data management unit 5, 6, 9 Data transfer unit 7 Shared data management unit 8 Shared data storage unit 10 Data storage unit 31 Shared data registration request 32, 37 Shared data display 33 Shared data operation right request 34 Shared data operation right request result display 35 Shared data operation right release 36 Shared data update request 41 System ID retention 42 Reading registered data 43 Shared data storage 44 Operation right reference 45 Operation right Hold 46 Release of operation right 47 Update of data storage unit, transfer of update information 48 Reception of update information, update of data storage unit 51 Server system connection request 61 Start of data transfer unit 71 Accept connection request, assign ID, secure communication data area 72 Registration of sharing new data 73 Sharing day Reading of 74 Shared operation right reference 75 Shared data operation right lock 76 Shared data operation right release 77 Shared data storage update, data update information storage 78 Data update information read and transfer 100 Database management system 101 Database request System 102 Dialog processing program or application program 103, 107 File management means 104, 108 Exclusive control means 105, 106 Transfer means 109, 110 Database

Claims (1)

[Claims] 1. A distributed collaborative work support apparatus in a distributed information processing system having a plurality of first systems and second systems connected by a network, wherein the first system receives user input as data processing information. A user interface unit for converting into data, a data storage unit for storing the data processing information, and a data management for updating data in the data storage unit based on data update information issued by the user interface unit and another system. And a first data transfer unit that sends and receives the data update information to and from a second system to exchange the data update information with another system, the second system comprising: , A second data transfer unit that transmits and receives the data update information to and from the first system, and a device shared by a plurality of the first systems. A shared data storage unit for storing data, said data based on the updated information, distributed cooperative work support apparatus characterized by having a shared data management unit for updating the data of the shared data storage unit.