508 search results - page 39 / 102 » Bringing Order to Query Optimization |
WWW
2011
ACM
13 years 2 months ago
2011
ACM
The problem of answering SPARQL queries over virtual SPARQL views is commonly encountered in a number of settings, including while enforcing security policies to access RDF data, ...
ICDE
2000
IEEE
14 years 9 months ago
2000
IEEE
Execution plans produced by traditional query optimizers for data integration queries may yield poor performance for several reasons. The cost estimates may be inaccurate, the mem...
ICDE
2007
IEEE
14 years 2 months ago
2007
IEEE
The ability to query data streams is of increasing importance and has been identified as a crucial element for modern organizations and agencies. This paper identifies a class o...
ARTDB
1997
Springer
13 years 12 months ago
1997
Springer
This paper proposes a strategy for parallel composite event detection in Active database systems (DBS). Up to now, the detection is sequential and totally synchronized, and thus p...
WAIM
2005
Springer
14 years 1 months ago
2005
Springer
In order to lay a solid foundation for the emerging semantic web, effective and efficient management of large RDF(S) data is in high demand. In this paper we propose an approach t...