712 search results - page 44 / 143 » Decoupled Query Optimization for Federated Database Systems |
107
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SIGMOD
2004
ACM
16 years 2 months ago
2004
ACM
Ranking is an important property that needs to be fully supported by current relational query engines. Recently, several rank-join query operators have been proposed based on rank...
103
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DEXA
2004
Springer
15 years 7 months ago
2004
Springer
Much work has been done on characterizing the workload of a database system. Previous studies focused on providing different types of statistical summaries, and modeling the run-ti...
113
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ICDE
2007
IEEE
15 years 8 months ago
2007
IEEE
Main memory is a critical resource when processing non-blocking queries with state intensive operators that require real-time responses. While partitioned parallel processing can ...
133
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SIGMOD
2003
ACM
16 years 2 months 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...
209
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VLDB
2007
ACM
16 years 2 months ago
2007
ACM
We investigate the problem of how to evaluate efficiently a collection of shortest path queries on massive graphs that are too big to fit in the main memory. To evaluate a shortes...