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Database management system and input data checking method

A technology for managing systems and inputting data, which is applied in the computer field and can solve problems such as reducing database data integrity, reducing maintainability, and increasing application complexity.

Inactive Publication Date: 2012-05-30
DALIAN ZHAOYANG SOFTWARE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this will increase the complexity of the application itself and reduce maintainability
And the data type check is not checked by the database system, which will reduce the data integrity in the database

Method used

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  • Database management system and input data checking method
  • Database management system and input data checking method
  • Database management system and input data checking method

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Embodiment Construction

[0026] The following descriptions are of preferred embodiments of the invention. Its purpose is to illustrate the general principles of the present invention and should not be regarded as a limitation of the present invention. The scope of the present invention should be defined by the scope of the patent application. A database input data checking method and system are proposed below.

[0027] figure 1 A structural block diagram showing an embodiment of a database management system (Database Management System). The database management system 100 communicates and operates with the application program 140. The application program 140 receives a large object to be inserted into the database management system 100, and receives a message returned by the database management system 100.

[0028] Multiple inspection modules are built in the database management system 100, such as figure 1 The inspection modules Vl, V2, ... Vn in , where 1 is a positive integer. The check...

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Abstract

The invention relates to a database management system and an input data checking method. The input data checking method is executed in the database management system and comprises the following steps of: establishing a name and limiting conditions of a data type of a large object in the database management system; receiving the large object; and checking whether the large object accords with the limiting conditions.

Description

technical field [0001] This invention relates to computer technology, and in particular to database system maintenance. Background technique [0002] With the rapid growth of computer performance and capacity, it has become an important task for databases to store multimedia data such as documents in various formats, graphics files, and audio and video. Generally speaking, regardless of whether the database system provides built-in or allows users to customize multimedia data types, its internal storage method is a large binary object (Binary Large Object, referred to as BLOB), and the field data type is defined as a domain (Domain ) is defined as LONG VARBINARY of multimedia data type, for example: CREATE DOMAIN MP3Type LONG VARBINARY [0003] CREATE DOMAIN MSWordType LONG VARBINARY [0004] CREATE TABLE Song ( [0005] Price INT CHECK VALUE>O AND VALUE<200, [0006] Lyrics MS Word Type, [0007] Music MP3Type, [0008] In this example, the user defines t...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 栾晓健
Owner DALIAN ZHAOYANG SOFTWARE TECH
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