6746 search results - page 590 / 1350 » Multimodal Database Query |
182
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IDEAS
2007
IEEE
16 years 1 months ago
2007
IEEE
The problem of data integration (query decomposition, data fragmentation) has been widely studied in literature, but the inherent hierarchical nature of XML data presents problems...
229
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ICDE
2005
IEEE
16 years 28 days ago
2005
IEEE
Many location-based applications require constant monitoring of k-nearest neighbor (k-NN) queries over moving objects within a geographic area. Existing approaches to this problem...
173
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ICDT
2005
ACM
16 years 25 days ago
2005
ACM
We study the problem of rewriting queries using views in the presence of access patterns, integrity constraints, disjunction, and negation. We provide asymptotically optimal algori...
205
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VLDB
2005
ACM
16 years 24 days ago
2005
ACM
As a simple XML query language but with enough expressive power, XPath has become very popular. To expedite evaluation of XPath queries, we consider the problem of rewriting XPath...
220
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WIDM
2004
ACM
16 years 22 days ago
2004
ACM
We address the problem of querying XML data over a P2P network. In P2P networks, the allowed kinds of queries are usually exact-match queries over file names. We discuss the exte...