6650 search results - page 287 / 1330 » Mutating database queries |
152
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VLDB
1991
ACM
15 years 8 months ago
1991
ACM
In order to cope efficiently with simple or complex queries as well as different application requirements (e.g., ad-hoc versus repetitive queries), a query optimizer ought to supp...
155
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DEXAW
2008
IEEE
15 years 6 months ago
2008
IEEE
With the increasing development of real applications using Semantic Web Technologies, it is necessary to provide scalable and efficient ontology querying and reasoning systems. In ...
148
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ICDE
2011
IEEE
14 years 8 months ago
2011
IEEE
— A moving kNN query continuously reports the k nearest neighbors of a moving query point. In addition to the query result, a service provider that evaluates moving queries often...
138
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ER
1999
Springer
15 years 9 months ago
1999
Springer
Several federated database systems have been built in the past using the relational or the object model as federating model. This paper gives an overview of the XMLMedia system, a ...
167
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SIGMOD
2011
ACM
14 years 7 months ago
2011
ACM
This demo shows how usage information buried in query logs can play a central role in data integration and data exchange. More specifically, our system U-Map uses query logs to g...