Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (27): 156-157.

• 数据库与信息处理 • Previous Articles     Next Articles

Method of effective query in inconsistent database

ZHU San-yuan1,2,ZHU Fu-xi2,WEI Wen-cai1   

  1. 1.Department of Comupter Science,Xiaogan University,Xiaogan,Hubei 432100,China
    2.School of Computer,Wuhan University,Wuhan 430072,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-21 Published:2007-09-21
  • Contact: ZHU San-yuan

一种不协调数据库中有效查询的方法

朱三元1,2,朱福喜2,魏文才1   

  1. 1.孝感学院 计算机科学系,湖北 孝感 432100
    2.武汉大学 计算机学院,武汉 430072
  • 通讯作者: 朱三元

Abstract: A database could be inconsistent due to various causes,and the answer of query in an inconsistent database could be unauthentic.This paper defines a conversion operator T?棕(Q) of original query Q and applies Tω(Q) to arbitrary database to get consistent query answer.

Key words: integrity constraint, inconsistency, database repair, CQA

摘要: 数据库可能由于多种原因变得不协调,不协调的数据库中的查询结果可能是不可信的。定义了一种将原始查询Q做转换的运算符Tω(Q),将转换后的结果作用于数据库,可以得到协调的答案。

关键词: 完整性约束, 不协调, 数据库修复, 协调的答案