995 search results - page 77 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
120
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VLDB
2007
ACM
15 years 8 months ago
2007
ACM
Real-world datasets exhibit a complex dependency structure among the data attributes. Learning this structure is a key task in automatic statistics configuration for query optimi...
110
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PODS
2001
ACM
16 years 2 months ago
2001
ACM
Database systems frequently have to execute a set of related queries, which share several common subexpressions. Multi-query optimization exploits this, by finding evaluation plan...
141
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DKE
2010
15 years 2 months ago
2010
We describe the Consistency Extractor System (ConsEx) that computes consistent answers to Datalog queries with negation posed to relational databases that may be inconsistent with...
PVLDB
2010
15 years 11 days ago
2010
We demonstrate an efficient LINQ to SQL provider and its significant impact on the runtime performance of LINQ programs that process large data volumes. This alternative provider...
122
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SIGMOD
2003
ACM
16 years 2 months ago
2003
ACM
A query optimizer compares alternative plans in its search space to find the best plan for a given query. Depending on the search space and the enumeration algorithm, optimizers v...