1160 search results - page 97 / 232 » Query Processing and Optimization for Pictorial Query Trees |
110
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ISCI
2007
15 years 1 months ago
2007
In an object-relational database management system, a query optimizer requires users to provide cost models of userdefined functions. The traditional approach is analytical, that...
124
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IDEAS
2006
IEEE
15 years 7 months ago
2006
IEEE
In this paper, we present SURCH, a novel decentralized algorithm for efficient processing of queries generated in sensor networks. Unlike existing techniques, SURCH is fully dist...
122
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IPPS
2007
IEEE
15 years 7 months ago
2007
IEEE
We study efficient query processing in distributed web search engines with global index organization. The main performance bottleneck in this case is due to the large amount of i...
123
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IDEAS
2008
IEEE
15 years 7 months ago
2008
IEEE
With more and more natural language text stored in databases, handling respective query predicates becomes very important. Optimizing queries with predicates includes (sub)string ...
129
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FOCS
1998
IEEE
15 years 5 months ago
1998
IEEE
This paper deals with the evaluation of acyclic Boolean conjunctive queries in relational databases. By well-known results of Yannakakis [1981], this problem is solvable in polynom...