313 search results - page 20 / 63 » Cost-Based Object Query Optimization |
110
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ER
2005
Springer
15 years 5 months ago
2005
Springer
Query rewriting is a fundamental task in query optimization and data integration. With the advent of the web, there has been renewed interest in data integration, where data is dis...
110
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COOPIS
2003
IEEE
15 years 5 months ago
2003
IEEE
We consider the problem of query evaluation in Peer-to-Peer (P2P) systems that support semantic-based retrieval services. We confine ourselves to the case where the peers employ t...
DS
1997
15 years 1 months ago
1997
The ODMG proposal has helped to focus the work on object-oriented databases (OODBs) onto a common object model and query language. Nevertheless there are several shortcomings of t...
109
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DPD
2002
14 years 11 months ago
2002
A major cost in executing queries in a distributed database system is the data transfer cost incurred in transferring relations (fragments) accessed by a query from different sites...
104
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VLDB
1995
ACM
15 years 3 months ago
1995
ACM
Query processing is one of the most, critical issues in Object-Oriented DBMSs. Extensible opt,imizers with efficient, search strategies require a cost model to select the most eff...