964 search results - page 72 / 193 » Efficiently Ordering Query Plans for Data Integration |
134
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VLDB
2005
ACM
15 years 10 months ago
2005
ACM
Cost-based query optimizers need to estimate the selectivity of conjunctive predicates when comparing alternative query execution plans. To this end, advanced optimizers use multi...
196
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BMCBI
2010
14 years 11 months ago
2010
Background: A significant problem in the study of mechanisms of an organism's development is the elucidation of interrelated factors which are making an impact on the differe...
143
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DEBU
2010
15 years 4 months ago
2010
Consider a universe of tokens, each of which is associated with a weight, and a database consisting of strings that can be represented as subsets of these tokens. Given a query st...
122
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IADIS
2004
15 years 6 months ago
2004
Internet has changed many aspects of our society, transforming it in e-society, and is having special importance in business world, Internet has converted business in e-business. ...
142
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VLDB
1998
ACM
15 years 8 months ago
1998
ACM
The query execution engine in Microsoft SQL Server employs hash-based algorithms for inner and outer joins, semi-joins, set operations (such as intersection), grouping, and duplic...