6746 search results - page 1027 / 1350 » Multimodal Database Query |
146
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VLDB
2005
ACM
16 years 5 days ago
2005
ACM
Prior work on computing queries from materialized views has focused on views defined by expressions consisting of selection, projection, and inner joins, with an optional aggrega...
182
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COMPGEOM
2004
ACM
16 years 3 days ago
2004
ACM
We consider the problem of approximate range counting over streams of d-dimensional points. In the data stream model, the algorithm makes a single scan of the data, which is prese...
134
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XIMEP
2004
ACM
16 years 3 days ago
2004
ACM
We argue that efficient support for schema validation and type annotation in XQuery processors deserves as much attention as efficient evaluation techniques for XPath queries have...
142
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VLDB
2004
ACM
16 years 1 days ago
2004
ACM
Sharing has emerged as a key idea of static and adaptive stream query processing systems. Inherent in these systems is a tension between sharing common work and avoiding unnecessa...
154
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VLDB
2004
ACM
16 years 1 days ago
2004
ACM
Different models have been proposed recently for representing temporal data, tracking historical information, and recovering the state of the document as of any given time, in XM...