995 search results - page 91 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
171
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SIGMOD
2004
ACM
16 years 3 months ago
2004
ACM
Virtually every commercial query optimizer chooses the best plan for a query using a cost model that relies heavily on accurate cardinality estimation. Cardinality estimation erro...
251
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ICDE
2009
IEEE
16 years 4 months ago
2009
IEEE
Information extraction from text databases is a useful paradigm to populate relational tables and unlock the considerable value hidden in plain-text documents. However, information...
145
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ICDE
2010
IEEE
15 years 9 months ago
2010
IEEE
Abstract— Developing a full-fledged cost-based XQuery optimizer is a fairly complex task. Nowadays, there is little knowledge concerning suitable cost formulae and optimization ...
113
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SSDBM
2008
IEEE
15 years 9 months ago
2008
IEEE
Applications requiring the handling of uncertain data have led to the development of database management systems extending the scope of relational databases to include uncertain (p...
123
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PODS
2010
ACM
15 years 8 months ago
2010
ACM
The notion of certain answers arises when one queries incompletely specified databases, e.g., in data integration and exchange scenarios, or databases with missing information. W...