JPH03225558A - Data retrieving system - Google Patents

Abstract

PURPOSE:To always retrieve updating data from a data base by retrieving data after registering file data by a data registering means when the file data have not been registered yet. CONSTITUTION:A person to retrieve data specifies the file name of a file to be retrieved and a retrieving condition to a data retrieving means 13. When the file name is applied by the specification, the data are extracted from the file by the data registering means 12 and whether the data have been already registered in the data base 15 or not is decided. When the data have not been registered yet as the result of decision, the registration of the data is instructed to the means 12. Based upon the instruction, the means 12 extracts the data from the file and registers the data and registering time in the data base 15. After completing the data registering processing, the data satisfying the retrieving condition specified by the user are extracted from the data base 15 and returned to the user.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data search method for searching data obtained from files in a computer system.

[Conventional technology]

In the conventional data search method, the data that the user wanted to search was searched against nine pieces of data that were registered at that time. An example of such a data search method is a search method that extracts data such as routine names and variable names from a file containing a source program, and retrieves data that satisfies certain conditions from among these data.

[Invention tries to solve! l [In a system that supports such searches, it is not desirable in terms of efficiency to retrieve data from a file every time there is a search request. Therefore, a method is used in which data is extracted from a file in advance and stored in a database, and searches are performed against the database. However, the search results that users expect are data that reflects the contents of the file at the time of the search, not at the time of database registration. However, when searching using conventional database systems and associated search methods, users need to find out which files require data re-registration. The disadvantage is that if it is necessary, it must be specified.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a data search means that can always search for data that reflects the contents of a file.

[Means to solve the problem]

Sixthly, to achieve the above object, the database search method of the present invention includes: a file management means for managing data input/output processing for files; a data management means for managing data input/output processing for the database; data registration means for inputting data from a file instructed to be registered via the file management means and registering the data in the database via the data management means; and data of the file is input into the database based on the file name instruction. It is determined whether the file is registered or not, and if it is not registered, the data registration means is instructed to register the data of the file, and if it is registered, the file is modified. and a data retrieval means for determining whether or not the data has been corrected, and instructing the data registration means to register the corrected data if the data has been corrected, and for retrieving the latest data from the database. .

[Effect]

The data search means determines whether the data of the file is registered in the database based on the file name instruction, and if it is not registered, the data registration means registers the data of the file and then retrieves the data. If the file is registered, it is determined whether the file has been modified or not. If the file has not been modified, the data is retrieved from the database, and if it has been modified, the data is registered by the data registration means. To search for corrected data after registering it and always search for the latest data from a database.

〔Example〕

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

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

In the figure, the data search method of this embodiment includes a file management means (11) that manages data input/output processing for individual files 101...10nK, and
- data registration means (12) for extracting the data and registering the data in the database (15);
) for data search means (13)
), and a data management means (14) that manages data input/output processing to the database.

FIG. 2 is a flowchart of the processing of the data retrieval means (13).
It shows that it consists of a data registration determination step 21, a data registration instruction step 22, a data recency determination step f23, a data retrieval instruction step 24, and a data return step 25.

Next, the operation of the data search method of this embodiment configured as described above will be explained.

A person conducting a data search instructs the data search means (13) about the file name of the file to be searched and the search conditions. Based on this instruction, the data retrieval means (
13) performs the processing steps shown below.

First, when a file name to be searched for data is given by the above-mentioned instruction, data is already extracted from the file by the data registration means (21), and it is determined whether the data is registered in the database ( Step 21).

If it is determined that the data is not registered in the database, KFi instructs the data registration means (12) K to register the data of the file (Stella f22). In response to this instruction, the data registration means (12) Vi extracts data from the file and registers the data and registration time in the database. If the data is registered in the database, the data is registered in the database and then It is determined whether the file has been modified (step 23). This determination is made by comparing the file modification time with the time the file data was registered in the database, and if the file modification time is earlier than the time the data was registered in the database, then 7
The isle has not been modified and is determined to have been modified at subsequent times.

If this judgment indicates that the file has been modified, the data registration means (12) is instructed to register the data (step 22), and the data registration means (12) is similarly extracted from the file. The data and registration time are registered in the database (15).

If this file has not been modified or after the process in step 22 described above is completed, the data that meets the search conditions specified by the user is searched in the database (15
) and return it to the user in step 24).

〔Effect of the invention〕

As explained above, since the present invention registers the latest data in the database, it has the advantage that it is possible to always retrieve data that reflects the contents of the file.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a flowchart of the processing of the data retrieval means. In the figure, 10...file, 11...file management means, 1
2... Data registration means, 13... Data search means,
14... Data management means, 15... Database.

Claims (1)

[Scope of Claims] File management means for managing data input/output processing for files; data management means for managing data input/output processing for databases; data registration means for inputting data through the data management means and registering the data in the database through the data management means; If not, the data registration means is instructed to register the data of the file, and if it is registered, it is determined whether or not the file has been modified, and if it has been modified, the data is registered. A data retrieval method comprising: a data retrieval means for instructing the data registration means to register corrected data, and retrieving the latest data from the database.