712 search results - page 54 / 143 » Decoupled Query Optimization for Federated Database Systems |
124
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CIKM
1999
Springer
15 years 7 months ago
1999
Springer
We present the architecture and a performance assessment of an extensible query optimizer written in Venus. Venus is a general-purpose active-database rule language embedded in C+...
218
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ICDE
2001
IEEE
16 years 4 months ago
2001
IEEE
LeSelect is a mediator system which allows scientists to publish their resources (data and programs) so they can be transparently accessed. The scientists can typically issue quer...
129
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DEXA
2004
Springer
15 years 8 months ago
2004
Springer
This paper proposes a method for automatic maintaining the similarity information for a particular class of Flexible Query Answering Systems (FQAS). The paper describes the three m...
114
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SIGMOD
1999
ACM
15 years 7 months ago
1999
ACM
Query processing in data integration occurs over network-bound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three re...
169
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DBPL
2003
Springer
15 years 8 months ago
2003
Springer
Abstract. In the context of XML data management systems, the estimation of query cardinality is becoming more and more important: the information provided by a query result estimat...