JPH1040157A - Object directing data base - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform access to a plurality of object at a time in a transaction, and to reduce a network load by adding a mechanism for a transaction processing for an object. SOLUTION: A transaction processing mechanism 5 provided in an object directing data base server 3 accepts a transaction processing from each client 41 -43 , performs access to an object group in the server 3, and returns the result to the clients 41 -43 . Thus, the mapping of the objects is operated at the transaction processing mechanism 5, and a transaction request to the transaction processing mechanism 5 and the result waiting are operated at the clients 41 -43 so that the retrieval of all the objects or the like can be attained in the server 3. That is, efficient access to complicated data of an object directing data base can be assured, and a network load can be reduced by validly using the processing capability of the server.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an object-oriented database, and more particularly, to a method of accessing software from a client in a client / server environment.

[0002]

2. Description of the Related Art In object-oriented programming, an object-oriented database is used because it is necessary to support persistent data that needs to be retained even after the processing of a program is completed.

[0003] Object data stored in an object-oriented database supports a wide variety of user-defined types, including voices and images, and associations between complex data.

In order to access a complicated database efficiently, as shown in FIG. 3, object data of an object-oriented database 1 is mapped to a client process space 2 and the process space 2 is accessed. In this case, a method of directly referring to a program using a soft pointer is adopted.

[0005] In a client / server environment, as shown in FIG. 4, it maps the object data of the server 3 to a plurality of clients space ₄₁ to ₃ through the network, and method of accessing the individual client is adopted And object method calls are executed in the client space.

[0006]

As described above, the object-oriented database can be accessed efficiently by using a direct reference method using a soft pointer, thereby efficiently accessing data having a complicated structure.

However, in a client / server environment, when it is necessary to access a large number of objects at once by one transaction, for example, a data search process requires a client to have a certain processing capability. . In addition, there is a problem that the processing load is remarkably reduced when the number of clients increases in the network load.

An object of the present invention is to provide an object-oriented database capable of efficiently accessing a large number of objects at a time in a transaction in a client / server environment and reducing the network load.

[0009]

According to the present invention, in order to solve the above-mentioned problems, a mechanism for transaction processing of an object is added, a series of accesses to a large number of objects are collectively performed on a server, and the result is obtained. In an object-oriented database that performs data management in a client / server environment, the server receives transaction processing from each client via a network, accesses an object group in the server, and A transaction processing mechanism for returning a result to each client is provided.

In the present invention, the server is provided with a transaction processing object which is activated by each client, requests a database management system on the server to perform transaction processing, and returns a transaction processing result by the management system to each client. It is characterized by the following.

[0011]

FIG. 1 shows a data access method of an object-oriented database according to an embodiment of the present invention.

FIG. 2 differs from FIG. 4 in that a transaction processing mechanism 5 is provided as one client of the object-oriented database server 3.

The transaction processing mechanism 5 receives transaction processing from each of the clients 4 ₁ to 4 ₃ , accesses an object group in the server 3, and returns the result to the clients 4 ₁ to 4 ₃ .

Thus, the server 3 performs the object mapping to the transaction processing unit 5, and the clients 4 ₁ to 4 ₃ perform a transaction request to the transaction processing unit 5 and wait for the result to search all objects. Can be.

That is, by providing the transaction processing mechanism 5, efficient access to the complicated data of the object-oriented database is guaranteed, and the network load can be reduced by effectively utilizing the processing capacity of the server. .

[0016] Figure 2 shows another embodiment of the present invention, the portion drawing is different from FIG. 4 is that provided the transaction processing mechanism as a transaction processing object 3 ₁ in the object oriented database.

Transaction processing object 3
_1, requests processing to the database management system on the server (DBMS) that when activated (method calls) by the client ₄₁ to _3.

[0018] DBMS waits a request for transaction processing, executes the processing requested by the request, and notifies the results to the results in the transaction processing object 3 _1,
Transaction processing object 3 ₁ returns mapping the result to the client 4 _{1-4 3.}

Accordingly, the transaction processing object enables network-transparent programming design.

[0020]

As described above, according to the present invention, a mechanism for transaction processing for an object is added, a series of accesses to a large number of objects are collectively performed on a server, and the result is returned to a client. , The server's processing power can be used effectively,
Network load can be reduced, and a decrease in processing capacity when the number of clients is large can be prevented.

[Brief description of the drawings]

FIG. 1 is a data access method by a transaction processing mechanism according to an embodiment of the present invention.

FIG. 2 shows a data access method using a transaction processing object according to another embodiment of the present invention.

FIG. 3 is a data access method of a conventional object-oriented database.

FIG. 4 shows a conventional data access method for an object-oriented database in a client / server environment.

[Explanation of symbols]

1,3 ... object-oriented database 3 ₁ ... transaction processing object 4 _1, 4 _2, 4 ₃ ... client 5 ... transaction processing mechanism

Claims (2)

[Claims] In an object-oriented database for performing data management in a client / server environment, the server receives transaction processing from each client via a network, accesses an object group in the server, and transmits the result to each client. An object-oriented database, comprising a transaction processing mechanism for returning to a database. 2. An object-oriented database for performing data management in a client / server environment, wherein the server is started by each client, requests a database management system on the server to perform a transaction process, and transmits a transaction process result by the management system. An object-oriented database having a transaction processing object returned to each client.