654 search results - page 57 / 131 » Complexity of Answering Queries Using Materialized Views |
158
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RIAO
2004
15 years 4 months ago
2004
This paper introduces a new approach to provide users with solutions to explore a domain via an information space. A key point in our approach is that information searching and ex...
117
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PODS
2002
ACM
16 years 3 months ago
2002
ACM
We study two classes of view update problems in relational databases. We are given a source database S, a monotone query Q, and the view Q(S) generated by the query. The first pro...
146
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KR
2010
Springer
15 years 8 months ago
2010
Springer
Ontologies can be used to provide an enriched vocabulary for the formulation of queries over instance data. We identify query emptiness and predicate emptiness as two central reas...
171
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CSL
2007
Springer
15 years 9 months ago
2007
Springer
Programs and Abstract Complexity A. Beckmann University of Wales Swansea Swansea, UK Axiom systems are ubiquitous in mathematical logic, one famous and well studied example being ï...
202
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SIGMOD
2005
ACM
16 years 3 months ago
2005
ACM
We are witnessing an explosive increase in the complexity of the information systems we rely upon. Autonomic systems address this challenge by continuously configuring and tuning ...