6004 search results - page 88 / 1201 » Parallelizing query optimization |
SIGMOD
2004
ACM
14 years 10 months ago
2004
ACM
Ranking is an important property that needs to be fully supported by current relational query engines. Recently, several rank-join query operators have been proposed based on rank...
VLDB
2002
ACM
13 years 9 months ago
2002
ACM
The cost of a query plan depends on many parameters, such as predicate selectivities and available memory, whose values may not be known at optimization time. Parametric query opt...
GECCO
2007
Springer
14 years 4 months ago
2007
Springer
SKG
2005
IEEE
14 years 3 months ago
2005
IEEE
Currently most centralized RDF storage and query architectures have problems in query performance and scalability. In this paper we present a distributed RDF query architecture to ...
ICDE
2000
IEEE
14 years 2 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...