JPH02118880A - Data control device - Google Patents

Abstract

PURPOSE:To improve the efficiency of a data control by providing a retrieving processing means, an index information processing means, an index information storing means and the like and combining and using a reading exclusive-use data storing means and a non-periodical writing reading data storing means. CONSTITUTION:When data are retrieved and retrieving information is inputted by a data input means 1, a retrieving processing means 3 inquires the index information corresponding to the retrieving information to an index information processing means 4. The means 4 receives the index information from an index information storing means 5 to store the index information of a reading exclusive-use data storing means 7 and a non-periodical writing reading data storing means 6 and transfers it to the means 3. The means 3 retrieves the data stored in the means 7 and the means 6 based on the index information and outputs them to a processing result data output means 2. When the adding and correcting are carried out to the data of the means 7, only the added and corrected part is written to the means 6 and the index information of the means 5 is corrected. Thus, the data of the means 7 can be used so as to be able to be added and corrected, and therefore, the data control can be made efficient.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a database system on a computer system, which combines a read-only data storage means such as a CD-ROM and a data storage means that can be written and read at any time such as a hard disk. Regarding the data management device to be used.

[Conventional technology]

In modern database systems, CDROM
For those that use read-only storage media such as, data management devices dedicated to information retrieval, hard disks, etc., records that can be written and recalled at any time are used. For those that use media, such as data management devices that enable information storage and retrieval,
Each had an independent management device.

[Problem to be solved by the invention]

Read-only storage media such as CD-ROMs have various advantages, such as large data capacity and high-speed retrieval. However, the user cannot add or modify the stored information. On the other hand, storage media such as hard disks that can be written and read at any time allow users to freely add and modify information, but are inferior to read-only storage media in terms of data capacity, search speed, etc.

An object of the present invention is to provide a data management device that eliminates the drawbacks of both by combining a read-only storage medium and a storage medium that can be written and read at any time, thereby enabling efficient data management.

[Means to solve the problem]

The data management device of the present invention includes a data input means for inputting data, search information, etc., a read-only data storage means, an occasional write-read data storage means, the read-only data storage means, and the occasional write-read data storage means. index information storage means for storing index information of the index information storage means, index information processing means for processing the index information of the index information storage means, and read-only data storage means for receiving information from the data input means and the index information processing means. and search processing means for processing information in the read/write data storage means, and processing result data output means for outputting the processing results of the search processing means.

[Effect]

According to the configuration of the present invention, when searching for data, the user first inputs search information such as a keyword for the data that the user wants to search for using the data input means.

Then, the search processing means receives the search information from the data input means and queries the index information processing means for index information corresponding to the search information. The index information processing means receives index information from the index information storage means storing index information of the read-only data storage means and the occasional write/read data storage means, and passes it to the search processing means. The search processing means searches for data stored in the read-only data storage means and the occasional write-read data storage means based on the index information received from the search information processing means. The retrieved data is output to the processing result data output means.

Next, adding and modifying data will be explained. When there is an addition or modification to the data in the read-only data storage means, only the added and modified amount is written into the occasional write-read data storage means, and the index information in the index information storage means is modified by the index information processing means. When the data is retrieved again, the data in the read-only data storage means and the occasional write/read data storage means will be output.

〔Example〕

FIG. 1 is a block diagram showing one embodiment of the present invention. The case of searching for mass data in the same figure will be explained. The data output means 1 receives and receives search information from the signal line 14 and outputs it to the signal line 8. The search processing means 3 receives search information from the signal line 8, generates an inquiry signal for the index of the information to be searched, and outputs it to the signal line 10. The index information processing means 4 receives and receives an index inquiry signal from the signal line 10, searches the index information stored in the index information storage means 5 through the signal line 11, and outputs the corresponding index information to the signal line 10. . The search processing means 3 receives and receives index information from the signal line 10, and based on the index information, writes and reads data stored in the read-only data storage means 6 through the signal line 13 and the read-only data storage means 7 through the signal line 12 at any time. Search and output to signal line 9. Information regarding whether the read-only data storage means 7 is searched, the write/read data storage means 6 is searched at any time, or both data storage means are searched is also recorded in the index information stored in the index information storage means 5. has been done. The processing result data output means 2 processes and outputs the data received from the signal line 9.

Next, a case where data is added or modified will be explained. When a user attempts to modify data stored in the read-only data storage means 7, the user inputs the modified data into the data input means 1. The modified data is passed to the search processing means 3 through the signal line 8. The search processing means 3 writes only the corrected data into the read data storage means 6 at any time; furthermore, the search processing means 3 generates index information regarding the corrected data written into the read data storage means 6 at any time; It is passed to the index information processing means 4 through the signal line IO. The index information processing means 4 receives the index information of the data stored in the read-only data storage means 7 that is subject to modification from the index information storage means 5 through the signal line 11. Next, the index information processing means 4 adds to and modifies the index information received from the signal line 11, and stores the modified index information in the index information storage means 5 through the signal line 11 again.

When adding or modifying data in the read/write data storage means 6, it is done by adding or modifying the stored data itself.

〔Effect of the invention〕

As explained in detail above, according to the data management device according to the present invention, in a database system, a user can add or modify data in a read-only data storage means such as a CD-ROM. It can be used like this.

[Brief explanation of the drawing]

No. 1 [21] is a block diagram showing an embodiment of the present invention. ]... Data input means, 2... Processing result data output means, 3... Search processing means, 4... Index information processing means, 5... Index information storage means, 6... Occasional writing Read data storage means, 7... Read-only data storage means.

Claims (1)

[Claims] a data input means for inputting data, search information, etc.;
a read-only data storage means, an occasional write-read data storage means, an index information storage means for storing index information of the read-only data storage means and the occasional write-read data storage means, and index information of the index information storage means. an index information processing means for processing; a search processing means for receiving information from the data input means and the index information processing means and processing information from the read-only data storage means and the occasional write-read data storage means; and the search processing means. A data management device comprising: processing result data output means for outputting processing results.