JPS61234431A - Information retrieval system - Google Patents

Abstract

PURPOSE:To promote ease of information retrieval language specifications by using a common and effective information retrieval language to give a command of information retrieval procedure and editing procedure to plural data management systems with different constitution and system mutually. CONSTITUTION:When the end user inputs the procedure of information retrieval and edition procedure from an information input/output device 1 in a form along with the specification of the information retrieval language, a generating means 2 generates a resource such as a control sentence, a source program, a parameter or a command possible for the retrieval processing in a data base management system being an object to start internally corresponding execution means 3. The started means 3 uses the resource offered by the means 2 to apply retrieval processing of a data base 4. The result of retrieval is given to a sending means 5, where the result edited according to the editing procedure is displayed visually on a device 1 at the user.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an information retrieval method, and more particularly to an information retrieval method that maintains compatibility of an information retrieval language with a plurality of database management systems having different structures and methods.

(Prior Art) Conventionally, information retrieval for database management systems is
If the structure or method of a database management system differs, an information retrieval language with specifications that incorporates the characteristics of the structure or method will be prepared in order to correspond to it, and this information retrieval language can be used to search for control statements, source programs, parameters, commands, etc. (Problem to be Solved by the Invention) In this conventional method, it is difficult to respond to changes in the environment of various hardware and operating systems from small to large machines, or to meet diverse demands. However, sufficient consideration has not been given to compatibility as an information retrieval language between the various database management systems that will be newly provided and will be improved. This requires a large amount of man-hours and costs to convert the information retrieval language to match the language specifications, and there is also the problem of an increase in development and maintenance man-hours associated with switching to a new database management system.

The purpose of the present invention is to make the information retrieval procedure simple for users who have no specialized knowledge of data structures or methods, and to maintain compatibility with the above-mentioned environmental changes. The object of the present invention is to provide an information retrieval method using an information retrieval language that makes it possible to use an information retrieval language.

(Means for Solving the Problems) The method of the present invention is an information retrieval method for multiple database management systems with different structures and methods, and comprises an execution means for retrieving information in a database in database management, and an information retrieval language. an input means for inputting an information retrieval procedure instructed by the information retrieval procedure; a generation means for generating information retrieval resources required by the execution means from the information retrieval procedure; and an output means for visually displaying the information based on the instructed editing procedure, and is characterized in that it maintains compatibility between multiple database management systems for information retrieval languages.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows the basic concept of the invention, and FIG. 2 shows an embodiment of the invention.

First, referring to FIG. 1, an end user uses N database management systems DB8 with mutually different configurations and methods.
1, DBS2, . . . , instructs information retrieval procedures and editing procedures using an information retrieval language IRL that is commonly valid for all DBSNs. End users are people in the field, and generally do not have thorough knowledge of the configurations and methods of each database management system DBSI to DBSN. Therefore, it is important that the editing procedures for including the information search results for searching the database and for outputting the search results can be created without knowledge of the specific configurations and methods of the database management systems DB81 to DBBN.

Therefore, from the information retrieval procedure instructed by such a "common" information retrieval language 1RL, the glue source (control statement, source program,
parameters and commands, etc.) and pass them to the corresponding database management system. Furthermore, the results obtained by searching the database are outputted according to the editing procedure specified by the common information retrieval language IRL.

Next, referring to FIG. 2, this embodiment includes an information input/output device 1, a generation means 2, an execution means 3, and a database
and a sending means 5. The information input/output device 1 is, for example, a keyboard device with a CRT, and the execution means 3 and the database 4 are any one of the database management systems DB81 to DB8N shown in FIG. do.

The end user generates the above-mentioned resources to enable search processing in the database management system that serves as an information search procedure and editing procedure, and internally activates the corresponding execution means 3. In the conventional method, this resource is input directly or indirectly by the end user in an "individual" information retrieval language corresponding to the target database management system. Provided by t
Search processing from the database 4 is performed using resources.

The search results are sent to the blade feeder l via an intermediate medium (not shown).
visibly displayed.

(Effects of the Invention) According to the present invention, by employing the above configuration, compatibility of information retrieval languages is maintained between multiple database management systems with different structures and methods, and the information retrieval language specifications are simplified. At the same time, it will be possible to significantly reduce conversion, maintenance, and redevelopment costs that would otherwise have been incurred due to environmental changes.

[Brief explanation of drawings]

FIG. 1 shows the basic concept of the invention, and FIG. 2 shows an embodiment of the invention. 1...Information input/output device, 2...Generation means, 3...Execution means, 4...Database, 5...Sending means , IRL... Information retrieval language, DB131, DB82 to DB8N...
...Database management system. $I I! r flower 2 figure

Claims (1)

[Claims] An information retrieval method for a plurality of database management systems with different structures and methods, comprising: an execution means for retrieving information in a database in the database management; and inputting an information retrieval procedure instructed in an information retrieval language. an input means for generating an information search resource required by the execution means from the information search procedure; and an editing procedure instructed in the information search language to edit the information search results of the database by the execution means. an output means for visually displaying the information based on the information retrieval language, wherein compatibility of the information retrieval language among the plurality of database management systems is maintained.