418 search results - page 22 / 84 » Optimizing Large Join Queries in Mediation Systems |
ICDE
2000
IEEE
14 years 2 days 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...
VLDB
1997
ACM
13 years 11 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...
SIGMOD
2012
ACM
11 years 10 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...
WWW
2007
ACM
14 years 8 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 ...
JCDL
2009
ACM
14 years 2 months 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...