624 search results - page 59 / 125 » Mutant Query Plans |
DEBU
2000
13 years 9 months ago
2000
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...
DPD
1998
13 years 9 months ago
1998
Distributed databases operating over wide-area networks such as the Internet, must deal with the unpredictable nature of the performance of communication. The response times of acc...
WAIM
2010
Springer
13 years 8 months ago
2010
Springer
Materialized views which are derived from base relations and stored in the database are often used to speed up query processing. In this paper, we leverage them in a traceable peer...
ICDE
2005
IEEE
14 years 3 months ago
2005
IEEE
Abstract— Distributed stream-based applications, such as continuous query systems, have network scale and time characteristics that challenge traditional distributed query optimi...
GLOBE
2009
Springer
14 years 2 months ago
2009
Springer
Abstract. We show how to specify and use the metadata for a virtual and relational data integration system under the local-as-view (LAV) approach. We use XML and RuleML for represe...