JPH0329040A - Saving system for data base file - Google Patents

Abstract

PURPOSE:To change the physical information on a data base with no consciousness of a data processing operation after a data base file is saved by adding also the physical information on the data base into a data base saving file. CONSTITUTION:A data base file saving means 5 inputs the data via a data base file 3 based on the information inputted via a physical information input means 4 and produces the saving data to output it to a data base saving file 7. Then a physical information output means 6 outputs the physical information on the data base inputted via the means 4 to the file 7. As a result, an actual environment, i.e., the physical information on the data base is changed after the data are saved into the file 3. Then the data are processed if they are affected by the change.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to the saving of database files in a computer system.

(Prior Art) First, the conventional technology will be explained with reference to FIG.

FIG. 4 is an explanatory diagram showing an outline of operations for saving a database file and processing data from the database save file according to the prior art.

In FIG. 4, 11 is a database file saving device, 12 is a database data processing device, 13 is a database file, 14 is a physical information input means, 15 is a database file saving means, 16 is a database saving file, and 17 is physical information. These are an input means, a decomposition means into 18 Fi records, and a 19 hatter base record file.

The prior art will be explained according to FIG.

In the database file saving device 11, processing is performed by the physical information input means 14 and the database file saving means 15. The physical information input means 14 inputs physical information regarding the database from the database file 13. In the database file saving means 15,
Based on the information input by the physical information input means 14, data is input from the database file 13, and saved data is created and output to the database save file 16.

In the database data processing device 12, processing is performed by a physical information input means 17 and a record decomposition means 18. The physical information input means 1T inputs physical information of the database from the database file 13. The record disassembly means 18 inputs saved data from the database save file 16, and the physical information input means 17 inputs saved data from the database save file 16.
Breaks down the data into records based on the information entered in
Output to database record file.

(Problem to be Solved by the Invention) In the conventional technology described above, when data in a database save file is decomposed into records, the same physical information is saved in the database file twice: when saving the database file and when decomposing it into records. mosquito? It has the disadvantage of ε, which requires a reading cabinet.

Therefore, when the data in the database save file is broken down into records, the physical information about the database in the database file needs to be in the same state as it was at the time the data was saved.

Therefore, there is a drawback that it is not allowed to change the physical information of the database body during data processing including saving data to a database save file.

An object of the present invention is to output physical information related to the database that has been input in advance to a database save file together with data of the database file when saving a database file in blocks to a database save file. To provide a database file saving method that eliminates the above drawbacks and facilitates database handling by inputting physical information about the database from the database saving file when decomposing the data in the database into records. There is a particular thing.

(Means for Solving Problem H) The database file saving method according to the present invention includes a database file saving means, a physical information input means,
The system is configured so that when decomposing data in a database save file into records, it can be executed only by inputting the database save file.

The database file saving means is for, when saving the database file to the database saving file in units of blocks, inputting/extracting physical information related to the database input in advance to/from the database saving file together with the data of the database file.

The physical information input means is for inputting physical information regarding the database from the database save file when decomposing the data in the database save file into records.

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

FIG. 1 is a block diagram showing an embodiment of the database file saving method according to the present invention.

In Fig. 1, 1 is a database file saving device;
2 is a database data processing device, 3 is a database file, 4 is a physical information input means, 5 is a database file save means, 6 is a physical information output means, T is a database save file, 8 is a physical information input means, 9 is a means for inputting to the Fi record. The decomposition means 10 is a database record file.

FIG. 1 shows how to save a database file according to the present invention.
This figure shows the operation of decomposing data in the database save file into records. The decomposition of data in the database save file into records by the database file save device is realized by the database data processing device.

The present invention will be explained below with reference to FIG.

In the database file saving device [1], processing is performed by physical information input means 4, database file saving means 5, and physical information output means 6. The physical information input means 4 inputs physical information regarding the database from the database file 3. The database file saving means 5 inputs data from the database file 3 based on the information input by the physical information inputting means 4, creates saved data, and outputs it to the database save file T.

The physical information output means 6 outputs the physical information regarding the database inputted by the physical information input means 4 to the database save file T.

In the database data processing device 2, physical information input means 8
Processing is performed by the record decomposition means 9. The physical information input means 8 inputs physical information regarding the database from the database save file T. The record decomposition means 9 decomposes the data into records based on the information input by the physical information input means 8, and outputs the data to the database record file 10.

2 and 3 are flowcharts showing the flow of processing in the database file saving means 5 and the record decomposition means s, respectively.

Next, the flow of the database file saving means 5 will be explained according to FIG. 1 and FIG. 2.

In step 51, physical information regarding the database is input from the database file via the D1 physical information input means 4.

In step 52, the database file is read.
A database file based on the physical information obtained in step 51 is read.

In step 53, the data section of the database save file T is created by creating the database save file data section.

In step 54, the physical information section of the database save file T is created from the physical information input in step 51 by creating a database save file physical information section.

In step 55, the data part created in step 53 and step 54 are output to the database save file.
Save the physical information section created in database save file T
Output to.

Next, the record disassembly means 9 will be explained with reference to FIG. 1 and FIG. 3.

In step 91, data is read from the database save file using database save file data read κ.

In step 92, physical information input
Input physical information from the database save file via .

In step 93, the data is decomposed into records, and the κ data is decomposed into records based on the information input in step 92.

In step 94, the record created in step 93 is output to the database record file.

As described above, in the method according to the present invention, even if there is a change in the physical information of the database in the actual environment after the database file is saved, data processing is executed without being affected by the change.

(Effects of the Invention) As explained above, in the database file saving method according to the present invention, by providing the database saving file with the physical information of the database, it is the database that first reads the physical information to the database file. The advantage is that it is done only when saving files (once), and secondly, it is not affected by the actual environment, and after saving the b1 database file, the physical information of the database can be changed without being aware of data processing. This has the effect that it is possible.

[Brief explanation of drawings]

FIG. 1 shows how to save a database file according to the present invention.
FIG. 3 is an explanatory diagram showing an outline of the operation of data processing from the Kayo database save file. FIG. 2 is an explanatory diagram showing the flow of processing within the database saving means applied to the database file saving device. FIG. 3 is an explanatory diagram showing the flow of processing within the record decomposition means applied to the database data processing device. FIG. 4 is an explanatory diagram illustrating an outline of the conventional operations for saving a database file, saving files, and processing data from the database save file. 1, 11ψe・Database file saving device 2, 12
●... Database data processing device 3, 13... Database file 4, 8, 14.17... Physical information input means 5, 15...
...Database file saving means 6...Physical information output means T, 16●●●Database saving file 9,1B...
・Method of disassembling into records

Claims (1)

[Claims] A database file saving means for outputting physical information related to the database input in advance to the database save file together with the data of the database file when saving the database file in blocks to the database save file; and the database save file. and a physical information input means for inputting physical information about the database from the database save file when decomposing the data in the database into records; A database file saving method characterized in that it is configured such that it can be executed by only one user.