418 search results - page 22 / 84 » Optimizing Large Join Queries in Mediation Systems |
146
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ICDE
2000
IEEE
15 years 10 months ago
2000
IEEE
We consider an architecture of mediators and wrappers for Internet accessible WebSources of limited query capability. Each call to a source is a WebSource Implementation (WSI) and...
150
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VLDB
1997
ACM
15 years 9 months ago
1997
ACM
Query optimizers that explore a search space exhaustively using transformation rules usually apply all possible rules on each alternative, and stop when no new information is prod...
196
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SIGMOD
2012
ACM
13 years 8 months ago
2012
ACM
There exists a need for high performance, read-only mainmemory database systems for OLAP-style application scenarios. Most of the existing works in this area are centered around t...
127
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WWW
2007
ACM
16 years 6 months ago
2007
ACM
Most RDF query languages allow for graph structure search through a conjunction of triples which is typically processed using join operations. A key factor in optimizing joins is ...
145
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JCDL
2009
ACM
16 years 2 days ago
2009
ACM
The utility of an enterprise search system is determined by three key players: the information retrieval (IR) system (the search engine), the enterprise users, and the service pro...