Consistent answers from integrated data sources

被引：0
|
作者：
Bertossi, L [1 ]
Chomicki, J
Cortés, A
Gutiérrez, C
机构：
[1] Carleton Univ, Sch Comp Sci, Ottawa, ON K1S 5B6, Canada
[2] SUNY Coll Buffalo, Dept Comp Sci & Engn, Buffalo, NY 14222 USA
[3] Pontificia Univ Catolica Chile, Dept Ciencias Computac, Santiago, Chile
[4] Univ Chile, Ctr Web Res, Dept Ciencias Computac, Santiago, Chile
来源：
FLEXIBLE QUERY ANSWERING SYSTEMS, PROCEEDINGS | 2002年 / 2522卷
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
When data sources are-integrated into a single global system, inconsistencies wrt global integrity constraints are likely to occur. In this paper, the notion of consistent answer to a global query in the context of the local-as-view approach to data integration is characterized. Furthermore, a methodology for generating query plans for retrieving consistent answers to global queries is introduced. For this purpose, an extension of the inverse-rules algorithm for deriving query plans for answering first-order queries is presented.
引用
收藏
页码：71 / 85
页数：15
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