3225 search results - page 201 / 645 » Query Optimization by Stored Queries |
250
Voted
ICDE
2008
IEEE
16 years 5 months ago
2008
IEEE
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
123
Voted
SAC
2009
ACM
15 years 11 months ago
2009
ACM
Today user-centered information acquisition over collections of complex XML documents is increasingly in demand. To this end, preferences have become an important paradigm enablin...
139
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ERSHOV
2003
Springer
15 years 9 months ago
2003
Springer
Storage costs are rapidly decreasing, making it feasible to store larger amounts of data in databases. This also makes it possible to store previous versions of data in the databa...
145
Voted
VLDB
1999
ACM
15 years 8 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 ...
156
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DASFAA
2006
IEEE
15 years 10 months ago
2006
IEEE
Abstract. In emerging data stream applications, data sources are typically distributed. Evaluating multi-join queries over streams from different sources may incur large communica...