2223 search results - page 287 / 445 » Query Optimization in an OODBMS |
241
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ICDE
2008
IEEE
16 years 5 months ago
2008
IEEE
Abstract-- We present COLR-Tree, an abstraction layer designed to support efficient spatio-temporal queries on live data gathered from a large collection of sensors. We use COLR-Tr...
247
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ICDE
2003
IEEE
16 years 5 months ago
2003
IEEE
XML documents are typically queried with a combination of value search and structure search. While querying by values can leverage traditional database technologies, evaluating st...
122
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WWW
2003
ACM
16 years 5 months ago
2003
ACM
This paper focuses on the optimization of the navigation through voluminous subsumption hierarchies of topics employed by Portal Catalogs like Netscape Open Directory (ODP). We ad...
156
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STOC
2006
ACM
16 years 4 months ago
2006
ACM
Local Search problem, which finds a local minimum of a black-box function on a given graph, is of both practical and theoretical importance to combinatorial optimization, complexi...
216
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SIGMOD
2006
ACM
16 years 4 months ago
2006
ACM
The current SQL standard for access control is coarse grained, in that it grants access to all rows of a table or none. Fine-grained access control, which allows control of access...