3225 search results - page 198 / 645 » Query Optimization by Stored Queries |
146
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ICIC
2007
Springer
15 years 10 months ago
2007
Springer
Abstract. We study the approximation of the integration of multivariate functions classes in the quantum model of computation. We first obtain a lower bound of the n-th minimal qu...
125
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DAWAK
2003
Springer
15 years 9 months ago
2003
Springer
Abstract. Many SQL queries with aggregated subqueries exhibit redundancy (overlap in FROM and WHERE clauses). We propose a method, called the for-loop, to optimize such queries by ...
227
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ICDE
2008
IEEE
16 years 5 months ago
2008
IEEE
Applications that monitor functions over rapidly and unpredictably changing data, express their needs as continuous queries. Our focus is on a rich class of queries, expressed as p...
156
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SIGMOD
2004
ACM
16 years 4 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
156
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VLDB
2002
ACM
15 years 4 months ago
2002
ACM
Structurally recursive XML queries are an important query class that follows the structure of XML data. At present, it is difficult for XQuery to type and optimize structurally re...