3969 search results - page 642 / 794 » Query Processing Using Ontologies |
231
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SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
Numerous widely publicized cases of theft and misuse of private information underscore the need for audit technology to identify the sources of unauthorized disclosure. We present...
132
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EDBT
2008
ACM
16 years 4 months ago
2008
ACM
Data Stream Management Systems (DSMSs) must support optimized execution scheduling of multiple continuous queries on massive, and frequently bursty, data streams. Previous approac...
121
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VLDB
2004
ACM
15 years 10 months ago
2004
ACM
We consider the problem of estimating set-expression cardinality in a distributed streaming environment where rapid update streams originating at remote sites are continually tran...
142
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SSDBM
2000
IEEE
15 years 9 months ago
2000
IEEE
Fast retrieval of time series in terms of their contents is important in many application domains. This paper studies database techniques supporting fast searches for time series ...
163
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DEXAW
2007
IEEE
15 years 6 months ago
2007
IEEE
Due to the lack of efficient native XML database management systems, XML data manipulation and query evaluation may be resource-consuming, and represent a bottleneck for several ...