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Heterogeneity of the data leads to low utilization rate of resources, producing a large amount of information islands. This paper gives a new method to convert global query into local query which can be executed by OGSA-DQP based on OGSA-DAI and OGSA-DQP, achieving centralized and uniformed access to multiple data sources. This method has been applied to a real project, and has achieved good results.
Date of Conference: 16-18 Aug. 2011