995 search results - page 33 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
120
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SIGMOD
1993
ACM
15 years 6 months ago
1993
ACM
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
193
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SIGMOD
2008
ACM
16 years 2 months ago
2008
ACM
Scientific workflow systems are increasingly used to automate complex data analyses, largely due to their benefits over traditional approaches for workflow design, optimization, a...
133
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ICDT
2012
ACM
13 years 4 months ago
2012
ACM
We introduce a representation system for relational data based on algebraic factorisation using distributivity of product over union and commutativity of product and union. We giv...
117
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VLDB
1999
ACM
15 years 6 months ago
1999
ACM
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...
114
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PODS
2006
ACM
16 years 2 months ago
2006
ACM
Query containment is a fundamental algorithmic problem in database query processing and optimization. Under set semantics, the query-containment problem for conjunctive queries ha...