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IJCIS
1998

Distributed Query Scheduling Service: An Architecture and Its Implementation

6 years 11 months ago
Distributed Query Scheduling Service: An Architecture and Its Implementation
We present the systematic design and development of a distributed query scheduling service DQS in the context of DIOM, a distributed and interoperable query mediation system 26 . DQS consists of an extensible architecture for distributed query processing, a three-phase optimization algorithm for generating e cient query execution schedules, and a prototype implementation. Functionally, two important execution models of distributed queries, namely moving query to data or moving data to query, are supported and combined into a uni ed framework, allowing the data sources with limited search and ltering capabilities to be incorporated through wrappers into the distributed query scheduling process. Algorithmically,conventional optimizationfactors such as join order are considered separately from and re ned by distributed system factors such as data distribution, execution location, heterogeneous host capabilities, allowing for stepwise re nement through three optimization phases: com...
Ling Liu, Calton Pu, Kirill Richine
Added 22 Dec 2010
Updated 22 Dec 2010
Type Journal
Year 1998
Where IJCIS
Authors Ling Liu, Calton Pu, Kirill Richine
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