2217 search results - page 193 / 444 » Rank-aware Query Optimization |
206
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PODS
1995
ACM
15 years 10 months ago
1995
ACM
During the last decade various spatial data structures have been designed and compared against each other with respect to their performance. Still missing is a lower bound result,...
168
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SYRCODIS
2007
15 years 7 months ago
2007
Several requirements for algebra suitable for e cient cost-based optimization are presented. It is shown that known XML algebras do not fully satisfy this requirements. A new alge...
143
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VLDB
1998
ACM
15 years 10 months ago
1998
ACM
The goal of the COKO-KOLA project [10, 91 is to express rules of rule-basedoptimizers in a mannerpermitting verification with a theoremprover. In [IO], we consideredquerytransform...
178
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BNCOD
1997
15 years 7 months ago
1997
Abstract. In this paper we present two improvements to the partitioning process: 1) A new dynamic bu er management strategy is employed to increase the average block size of I/O-tr...