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Study on consistent query answering in inconsistent databases |
| XIE Dong, YANG Luming |
| School of Information Science and Engineering, Central South University, Changsha 410083, China; |
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Abstract Consistent query answering is an approach to retrieving consistent answers over databases that might be inconsistent with respect to some given integrity constraints. The approach is based on a concept of repair. This paper surveys several recent researches on obtaining consistent information from inconsistent databases, such as the underlying semantic model, a number of approaches to computing consistent query answers and the computational complexity of this problem. Furthermore, the work outlines potential research directions in this area.
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Issue Date: 05 December 2007
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