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» Conditional Term Rewriting as a Deductive Database Language
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ICDT
2011
ACM
270views Database» more  ICDT 2011»
13 years 2 months ago
On the equivalence of distributed systems with queries and communication
Distributed data management systems consist of peers that store, exchange and process data in order to collaboratively achieve a common goal, such as evaluate some query. We study...
Serge Abiteboul, Balder ten Cate, Yannis Katsis
SIGMOD
2010
ACM
250views Database» more  SIGMOD 2010»
13 years 11 months ago
Expressive and flexible access to web-extracted data: a keyword-based structured query language
Automated extraction of structured data from Web sources often leads to large heterogeneous knowledge bases (KB), with data and schema items numbering in the hundreds of thousands...
Jeffrey Pound, Ihab F. Ilyas, Grant E. Weddell
ICDT
2009
ACM
198views Database» more  ICDT 2009»
14 years 11 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
FAC
2008
92views more  FAC 2008»
13 years 11 months ago
Capture-avoiding substitution as a nominal algebra
Substitution is fundamental to the theory of logic and computation. Is substitution something that we define on syntax on a case-by-case basis, or can we turn the idea of substitut...
Murdoch James Gabbay, Aad Mathijssen
SIGMOD
2007
ACM
225views Database» more  SIGMOD 2007»
14 years 11 months ago
From complete to incomplete information and back
Incomplete information arises naturally in numerous data management applications. Recently, several researchers have studied query processing in the context of incomplete informat...
Lyublena Antova, Christoph Koch, Dan Olteanu