2724 search results - page 111 / 545 » Optimizing Queries on Files |
129
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STACS
2010
Springer
15 years 10 months ago
2010
Springer
In this paper we consider the problem of reconstructing a hidden weighted
hypergraph of constant rank using additive queries. We prove the following: Let G be
a weighted hidden h...
182
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SIGMOD
2006
ACM
16 years 3 months ago
2006
ACM
121
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SYRCODIS
2007
15 years 4 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...
153
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SIGMOD
2001
ACM
16 years 3 months ago
2001
ACM
Materialized views have been found to be very effective at speeding up queries, and are increasingly being supported by commercial databases and data warehouse systems. However, w...
124
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ICDE
2010
IEEE
16 years 15 days ago
2010
IEEE
— Many applications require sorting a table over multiple sort orders: generation of multiple reports from a table, evaluation of a complex query that involves multiple instances...