6650 search results - page 582 / 1330 » Mutating database queries |
184
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ICDE
2007
IEEE
16 years 1 months ago
2007
IEEE
Recently, systems providing access to extremely large data collections, managed in a distributed manner, gain emerging attention. A promising approach to implement the physical la...
180
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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...
218
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ICDE
2005
IEEE
16 years 20 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...
169
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ICDT
2005
ACM
16 years 17 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...
198
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VLDB
2005
ACM
16 years 16 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...