313 search results - page 16 / 63 » Cost-Based Object Query Optimization |
WISE
2007
Springer
15 years 4 months ago
2007
Springer
A common search problem in the World Wide Web concerns finding information if it is not known when the sources of information appear and how long sources will be available on the ...
VLDB
2001
ACM
15 years 2 months ago
2001
ACM
imizer Communication using Abstract Plans in Sybase ASE Query optimizers are error prone, due to both their nature and the increased search space that modern query processing requ...
ADBIS
2000
Springer
15 years 1 months ago
2000
Springer
A number of algorithms of clustering spatial data for reducing the number of disk seeks required to process spatial queries have been developed. One of the algorithms is the scheme...
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ICDE
2005
IEEE
15 years 11 months ago
2005
IEEE
Given a region qR and a future timestamp qT, a "range aggregate" query estimates the number of objects expected to appear in qR at time qT. Currently the only methods fo...
VLDB
1999
ACM
15 years 1 months ago
1999
ACM
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...