712 search results - page 50 / 143 » Decoupled Query Optimization for Federated Database Systems |
225
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SIGMOD
2007
ACM
16 years 3 months ago
2007
ACM
Incomplete information arises naturally in numerous data management applications. Recently, several researchers have studied query processing in the context of incomplete informat...
128
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SIGMOD
1993
ACM
15 years 7 months ago
1993
ACM
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
108
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ICDT
1995
ACM
15 years 6 months ago
1995
ACM
A tuple t1 of relation R subsumes tuple t2 of R, with respect to a query Q if for every database, tuple t1 derives all, and possibly more, answers to query Q than derived by tuple ...
120
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ICDE
2007
IEEE
15 years 9 months ago
2007
IEEE
Resource virtualization is currently being employed at all levels of the IT infrastructure to improve provisioning and manageability, with the goal of reducing total cost of owner...
144
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VLDB
2005
ACM
15 years 8 months ago
2005
ACM
“W3QL: A Query Language for the WWW”, published in 1995, presented a language with several distinctive features. Employing existing indexes as access paths, it allowed the sel...