2217 search results - page 415 / 444 » Rank-aware Query Optimization |
103
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PODS
1999
ACM
15 years 6 months ago
1999
ACM
Query optimizers rely on fast, high-quality estimates of result sizes in order to select between various join plans. Selfjoin sizes of relations provide bounds on the join size of...
DAWAK
1999
Springer
15 years 6 months ago
1999
Springer
A Data Warehouse DW can be abstractly seen as a set of materialized views de ned over relations that are stored in distributed heterogeneous databases. The selection of views for...
109
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SP
1996
IEEE
15 years 6 months ago
1996
IEEE
View-based access control enables content-based and context-based security, as opposed to container-based security provided in operating systems. However, view-based access contro...
123
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WADS
1997
Springer
15 years 6 months ago
1997
Springer
We present several efficient dynamic data structures for point-enclosure queries, involving convex fat objects in R2 or R3. Our planar structures are actually fitted for a more ...
126
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ICPP
1993
IEEE
15 years 6 months ago
1993
IEEE
Task graphs are used for scheduling tasks on parallel processors when the tasks have dependencies. If the execution of the program is known ahead of time, then the tasks can be st...