5166 search results - page 104 / 1034 » Web Query Optimizer |
189
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ICDT
2009
ACM
16 years 3 months ago
2009
ACM
We study the problem of querying data sources that accept only a limited set of queries, such as sources accessible by Web services which can implement very large (potentially inf...
121
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ESWS
2009
Springer
15 years 9 months ago
2009
Springer
This thesis investigates the question whether and how ontologies such as the ones currently evolving in the Semantic Web can serve as knowledge structures for the generation of que...
139
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DBA
2006
15 years 3 months ago
2006
: Recursive queries are required in many object-oriented database applications. Among them we can mention Bill-Of-Material (BOM), stock market dependencies, various kinds of networ...
121
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SIGMOD
2010
ACM
15 years 7 months ago
2010
ACM
Current relational databases require that a database schema exist prior to data entry and require manual optimization for best performance. We describe the query optimization tech...
138
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CIKM
2005
Springer
15 years 8 months ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...