712 search results - page 52 / 143 » Decoupled Query Optimization for Federated Database Systems |
151
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EWDW
1994
15 years 7 months ago
1994
For object-oriented databases we propose a new technique for optimizing queries containing method invocations. This technique is based on the definition of inverse methods and que...
163
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WWW
2010
ACM
15 years 10 months ago
2010
ACM
The Semantic Web community, until now, has used traditional database systems for the storage and querying of RDF data. The SPARQL query language also closely follows SQL syntax. A...
240
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ICDE
2001
IEEE
16 years 4 months ago
2001
IEEE
Semi-join reducers were introduced in the late seventies as a means to reduce the communication costs of distributed database systems. Subsequent work in the eighties showed, howe...
159
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PPDP
2010
Springer
15 years 1 months ago
2010
Springer
This paperdescribes the use of a powerful graph query language for querying programs, and a novel combination of transformations for generating efficient implementations of the q...
209
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ICDE
2003
IEEE
16 years 4 months ago
2003
IEEE
Semantic caches, originally proposed for client-server database systems, are being recently deployed to accelerate the serving of dynamic web content by transparently caching data...