5130 search results - page 84 / 1026 » Constraint Query Languages |
107
Voted
PODS
2005
ACM
16 years 24 days 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...
133
Voted
PODS
2004
ACM
16 years 24 days 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 ...
214
Voted
ICDT
2010
ACM
15 years 10 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...
103
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DLOG
2003
15 years 2 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 25 days 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 ...