2987 search results - page 256 / 598 » Multiobjective Query Optimization |
117
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VLDB
1991
ACM
15 years 5 months ago
1991
ACM
We explore the implications of supporting bags (i.e. multisets) in a data model and associated query language, and present some formal results concerned with the algebraic propert...
97
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WOLLIC
2009
Springer
15 years 9 months ago
2009
Springer
In the recent years, query answering over Description Logic (DL) knowledge bases has been receiving increasing attention, and various methods and techniques have been presented for...
114
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DASFAA
2007
IEEE
15 years 8 months ago
2007
IEEE
Abstract. To provide complex query processing in peer-to-peer systems has attracted much attention in both academic and industrial community. We present GChord, a scalable techniqu...
123
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SSD
2001
Springer
15 years 6 months ago
2001
Springer
Several studies have focused on the efficient processing of simple spatial query types such as selections and spatial joins. Little work, however, has been done towards the optimiz...
97
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AIPS
1998
15 years 3 months ago
1998
We present the application of the Planning by Rewriting PbR framework to query planning in distributed and heterogeneous environments. PbR is a new paradigm for e cient high-quali...