350 search results - page 17 / 70 » An optimization framework for map-reduce queries |
117
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SIGMOD
2003
ACM
16 years 17 days ago
2003
ACM
Most relational query optimizers make use of information about the costs of accessing tuples and data structures on various storage devices. This information can at times be off b...
109
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PODS
2000
ACM
15 years 4 months ago
2000
ACM
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
113
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WEBDB
2000
Springer
15 years 4 months ago
2000
Springer
Rewriting queries using views is a powerful technique that has applications in data integration, data warehousing and query optimization. Query rewriting in relational databases i...
179
Voted
SIGMOD
2007
ACM
16 years 17 days ago
2007
ACM
This paper extends relational processing and optimization to the FISQL/FIRA languages for dynamic schema queries over multidatabases. Dynamic schema queries involve the creation a...
115
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WSDM
2012
ACM
13 years 8 months ago
2012
ACM
Most standard information retrieval models use a single source of information (e.g., the retrieval corpus) for query formulation tasks such as term and phrase weighting and query ...