DocumentCode :
3542568
Title :
Query processing in a data grid environment
Author :
Eddine, Ayouni Houssam ; Hafida, Belbachir
Author_Institution :
Dept. of Comput. Sci., Univ. of Sci. & Technol. Mohamed Boudiaf USTO, Oran, Algeria
fYear :
2012
fDate :
10-12 May 2012
Firstpage :
645
Lastpage :
649
Abstract :
The data grids are very wide distributed environments where the nodes are distributed through the sphere, and the data which are shared there, are very bulky. The data grids are facing new problems during the distributed queries processing. These problems are caused by the characteristics of grid systems (e.g. the large-scale, instability and the autonomy of nodes, heterogeneity and the unavailability of resources). We propose in this paper, a new strategy for optimizing the query execution, taking into account the problems of discovery of nodes, and the efficient allocation of replicas. Thus, we propose to execute each relational operator of an execution plan by two mobile agents, by attaching each agent to the node storing the replica involved in the operator. A mobile agent can migrate to another site to improve the query execution cost. This cost is calculated using a cost model that we have determined.
Keywords :
grid computing; mobile agents; query processing; data grid environment; distributed environment; distributed queries processing; mobile agent; node discovery; query execution cost improvement; query execution optimisation; query processing; relational operator; replica allocation; Data models; Mobile communication; Production; Silicon; Time factors; cost model; data grid; database; mobile agents; query optimization;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia Computing and Systems (ICMCS), 2012 International Conference on
Conference_Location :
Tangier
Print_ISBN :
978-1-4673-1518-0
Type :
conf
DOI :
10.1109/ICMCS.2012.6320190
Filename :
6320190
Link To Document :
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