861 search results - page 93 / 173 » Relational Completeness of Query Languages for Annotated Dat... |
PODS
1999
ACM
15 years 2 months ago
1999
ACM
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
122
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DLOG
2011
14 years 1 months ago
2011
W3C currently extends the SPARQL query language with so-called entailment regimes, which define how queries are evaluated using logical entailment relations. We describe a sound a...
NAR
2011
14 years 22 days ago
2011
dictyBase (http://www.dictybase.org), the model organism database for Dictyostelium, aims to provide the broad biomedical research community with well integrated, high quality dat...
DBPL
1993
Springer
15 years 2 months ago
1993
Springer
A class of database programs exist which are required to operate over an infinite number of types; included in this class are object browsers and query tools. The types over which...
120
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PODS
1999
ACM
15 years 2 months ago
1999
ACM
Semistructured data occur in situations where information lacks a homogeneous structure and is incomplete. Yet, up to now the incompleteness of information has not been re ected b...