3225 search results - page 237 / 645 » Query Optimization by Stored Queries |
157
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SIGMOD
2004
ACM
16 years 5 months ago
2004
ACM
Peer data management systems (PDMS) offer a flexible architecture for decentralized data sharing. In a PDMS, every peer is associated with a schema that represents the peer's...
130
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GCC
2007
Springer
15 years 11 months ago
2007
Springer
Data integration has evolved to provide efficient data management across distributed and heterogeneous data sources in grid environment. However, existing works in data integratio...
133
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ICDT
2005
ACM
15 years 10 months ago
2005
ACM
We study the problem of rewriting queries using views in the presence of access patterns, integrity constraints, disjunction, and negation. We provide asymptotically optimal algori...
140
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VLDB
2004
ACM
15 years 10 months ago
2004
ACM
When a client submits a set of XPath queries to a XML database on a network, the set of answer sets sent back by the database may include redundancy in two ways: some elements may...
151
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DKE
2006
15 years 5 months ago
2006
The K-Closest-Pairs Query (K-CPQ), a type of distance join in spatial databases, discovers the K pairs of objects formed from two different datasets with the K smallest distances....