6004 search results - page 315 / 1201 » Parallelizing query optimization |
118
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ADC
2003
Springer
15 years 6 months ago
2003
Springer
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
110
Voted
DEXA
2008
Springer
15 years 2 months ago
2008
Springer
The query performance for tracing tags depends upon the distribution of tag trajectories in the data space. We examine a more efficient representation of tag trajectories by means ...
190
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ICDE
2002
IEEE
16 years 2 months ago
2002
IEEE
Modern relational database systems are beginning to support ad hoc queries on mining models. In this paper, we explore novel techniques for optimizing queries that apply mining mo...
178
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ICDE
2000
IEEE
16 years 2 months ago
2000
IEEE
Execution plans produced by traditional query optimizers for data integration queries may yield poor performance for several reasons. The cost estimates may be inaccurate, the mem...
101
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ICDE
2007
IEEE
15 years 7 months ago
2007
IEEE
The ability to query data streams is of increasing importance and has been identified as a crucial element for modern organizations and agencies. This paper identifies a class o...