157 search results - page 13 / 32 » A Conjunctive Query Language for Description Logic Aboxes |
105
Voted
PODS
1998
ACM
15 years 4 months ago
1998
ACM
We study the complexity of the problem of answering queries using materialized views. This problem has attracted a lot of attention recently because of its relevance in data integ...
126
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ICDT
2012
ACM
13 years 2 months ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
100
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DLOG
2003
15 years 1 months ago
2003
The Semantic Web initiative defines important challenges for knowledge representation and database systems. Recently, several standards for representation languages have been pro...
105
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PODS
2010
ACM
15 years 5 months ago
2010
ACM
We investigate a higher-order query language that embeds operators of the positive relational algebra within the simply-typed λ-calculus. Our language allows one to succinctly de...
114
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OWLED
2007
15 years 1 months ago
2007
Fuzzy Description Logics (Fuzzy DLs) and fuzzy OWL have been proposed as languages able to represent and reason about imprecise and vague knowledge. Such extensions have gained con...