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» On the Consistent Rewriting of Conjunctive Queries Under Pri...
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ICDT
2009
ACM
198views Database» more  ICDT 2009»
14 years 6 months ago
Consistent query answering under primary keys: a characterization of tractable queries
This article deals with consistent query answering to conjunctive queries under primary key constraints. The repairs of an inconsistent database db are obtained by selecting a max...
Jef Wijsen
ICDT
2005
ACM
128views Database» more  ICDT 2005»
13 years 10 months ago
First-Order Query Rewriting for Inconsistent Databases
We consider the problem of retrieving consistent answers over databases that might be inconsistent with respect to some given integrity constraints. In particular, we concentrate o...
Ariel Fuxman, Renée J. Miller
ICDE
2007
IEEE
145views Database» more  ICDE 2007»
14 years 6 months ago
Fast Identification of Relational Constraint Violations
Logical constraints, (e.g., 'phone numbers in toronto can have prefixes 416, 647, 905 only'), are ubiquitous in relational databases. Traditional integrity constraints, ...
Amit Chandel, Nick Koudas, Ken Q. Pu, Divesh Sriva...