2223 search results - page 49 / 445 » Query Optimization in an OODBMS |
182
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SIGMOD
2007
ACM
15 years 12 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
175
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ICDE
2009
IEEE
16 years 1 months ago
2009
IEEE
Commercial database systems expose query hints to address situations in which the optimizer chooses a poor plan for a given query. However, current query hints are not flexible eno...
162
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SIGMOD
2005
ACM
15 years 12 months ago
2005
ACM
Research on query optimization has focused almost exclusively on reducing query execution time, while important qualities such as consistency and predictability have largely been ...
105
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VLDB
1995
ACM
15 years 3 months ago
1995
ACM
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering and query rewrite (JOQR) followed by parallelization. We focus on t...
ICDCN
2009
Springer
15 years 4 months ago
2009
Springer
Wireless sensor networks with multiple users collecting data directly from the sensors have many potential applications. An important problem is to allocate for each user a query r...