315 search results - page 17 / 63 » Runtime Optimization of Continuous Queries |
VLDB
1998
ACM
15 years 3 months ago
1998
ACM
Query optimizers normally compile queries into one optimal plan by assuming complete knowledge of all cost parameters such asselectivity and resourceavailability. The execution of...
SIGMOD
1997
ACM
15 years 3 months ago
1997
ACM
In this paper, we study a simple SQL extension that enables query writers to explicitly limit the cardinality of a query result. We examine its impact on the query optimization an...
186
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SIGMOD
2009
ACM
15 years 12 months ago
2009
ACM
Existing work in the skyline literature focuses on optimizing the processing cost. This paper aims at minimization of the communication overhead in client-server architectures, wh...
100
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SSD
2009
Springer
15 years 6 months ago
2009
Springer
Recent advances in wireless communications and positioning devices have generated a tremendous amount of interest in the continuous monitoring of spatial queries. However, such app...
SIGMOD
2002
ACM
15 years 12 months ago
2002
ACM
Relational query optimizers have traditionally relied upon table cardinalities when estimating the cost of the query plans they consider. While this approach has been and continue...