712 search results - page 74 / 143 » Decoupled Query Optimization for Federated Database Systems |
150
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DASFAA
1997
IEEE
15 years 7 months ago
1997
IEEE
The success of the World Wide Web is boosting the development of multimedia database systems and their integration into the internet. For the documents stored and exchanged in the...
232
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ICDE
2008
IEEE
16 years 4 months ago
2008
IEEE
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
122
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FUIN
2006
15 years 3 months ago
2006
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...
122
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WWW
2004
ACM
16 years 3 months ago
2004
ACM
A technical infrastructure for storing, querying and managing RDF data is a key element in the current semantic web development. Systems like Jena, Sesame or the ICS-FORTH RDF Sui...
218
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ICDE
2009
IEEE
16 years 4 months ago
2009
IEEE
Materializing results from complex aggregation queries helps to significantly improve response times in OLAP servers. This problem is known as the view selection problem: choosing ...