5130 search results - page 84 / 1026 » Constraint Query Languages |
121
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PODS
2005
ACM
16 years 2 months ago
2005
ACM
We investigate the question of whether a query can be answered using a set V of views. We first define the problem in information-theoretic terms: we say that V determines if V pr...
152
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PODS
2004
ACM
16 years 2 months ago
2004
ACM
The Semantic Web is based on the idea of adding more machine-readable semantics to web information via annotations written in a language called the Resource Description Framework ...
234
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ICDT
2010
ACM
15 years 11 months ago
2010
ACM
We consider a fragment of XPath named `forward-XPath', which contains all descendant and rightwards sibling axes as well as data equality and inequality tests. The satisfiabi...
120
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DLOG
2003
15 years 3 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...
SIGMOD
2001
ACM
16 years 2 months ago
2001
ACM
We introduce a rich language of descriptions for semistructured tree-like data, and we explain how such descriptions relate to the data they describe. Various query languages and ...