Why is it Hard to Obtain a Dichotomy for Consistent Query Answering?

A database may for various reasons become inconsistent with respect to a given set of integrity constraints. To overcome the problem, a formal approach to querying such inconsistent databases has been proposed and since then, a lot of efforts have been spent to classify the complexity of consistent...

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Vydané v:	2013 28th Annual ACM/IEEE Symposium on Logic in Computer Science s. 550 - 559
Hlavný autor:	Fontaine, Gaelle
Médium:	Konferenčný príspevok..
Jazyk:	English
Vydavateľské údaje:	IEEE 01.06.2013
Predmet:	Complexity theory Computer science Data integration Educational institutions Maintenance engineering Polynomials
ISBN:	1479904139, 9781479904136
ISSN:	1043-6871
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