712 search results - page 90 / 143 » Decoupled Query Optimization for Federated Database Systems |
228
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ICDE
2005
IEEE
16 years 4 months ago
2005
IEEE
We address the problem of executing continuous multiway join queries in unpredictable and volatile environments. Our query class captures windowed join queries in data stream syst...
117
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PODS
2008
ACM
16 years 3 months ago
2008
ACM
In the rank join problem, we are given a set of relations and a scoring function, and the goal is to return the join results with the top K scores. It is often the case in practic...
195
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SIGMOD
2007
ACM
16 years 3 months ago
2007
ACM
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
186
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BMCBI
2011
14 years 6 months ago
2011
Background: The Smith-Waterman algorithm for local sequence alignment is more sensitive than heuristic methods for database searching, but also more time-consuming. The fastest ap...
109
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VLDB
2004
ACM
15 years 8 months ago
2004
ACM
We consider the problem of horizontally partitioning a dynamic relation across a large number of disks/nodes by the use of range partitioning. Such partitioning is often desirable...