619 search results - page 53 / 124 » Query Planning in Infomaster |
204
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SIGMOD
2006
ACM
16 years 2 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
135
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SIGMOD
2001
ACM
16 years 2 months ago
2001
ACM
Materialized views have been found to be very effective at speeding up queries, and are increasingly being supported by commercial databases and data warehouse systems. However, w...
110
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PODS
2001
ACM
16 years 2 months ago
2001
ACM
Database systems frequently have to execute a set of related queries, which share several common subexpressions. Multi-query optimization exploits this, by finding evaluation plan...
101
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CIKM
2006
Springer
15 years 5 months ago
2006
Springer
The I/O performance of query processing can be improved using two complementary approaches. One can try to improve on the buffer and the file system management policies of the DB ...
129
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ESA
2005
Springer
15 years 7 months ago
2005
Springer
We present a new speedup technique for route planning that exploits the hierarchy inherent in real world road networks. Our algorithm preprocesses the eight digit number of nodes n...