3969 search results - page 623 / 794 » Query Processing Using Ontologies |
152
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EDBT
2009
ACM
15 years 8 months ago
2009
ACM
A skyline query returns a set of objects that are not dominated by other objects. An object is said to dominate another if it is closer to the query than the latter on all factors...
129
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PODS
2002
ACM
16 years 5 months ago
2002
ACM
We study two classes of view update problems in relational databases. We are given a source database S, a monotone query Q, and the view Q(S) generated by the query. The first pro...
147
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PODS
2008
ACM
16 years 5 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
153
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SIGIR
2008
ACM
15 years 4 months ago
2008
ACM
Searching for people on the Web is one of the most common query types to the web search engines today. However, when a person name is queried, the returned webpages often contain ...
235
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VLDB
2004
ACM
16 years 5 months ago
2004
ACM
There is growing interest in algorithms for processing and querying continuous data streams (i.e., data that is seen only once in a fixed order) with limited memory resources. In i...