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Federated Query Processor


The caGrid Federated Query Processor (FQP) Infrastructure provides a mechanism to perform basic distributed aggregations and joins of queries over multiple data services. As caGrid data services all use a uniform query language, CQL, as well as a uniform grid interface, the Federated Query Infrastructure can be used to express queries over any combination of caGrid data services. Federated queries are expressed with a query language, DCQL, which is an extension to CQL to express such concepts as joins against other data services, aggregations, and target data services.

Last edited by
Clayton Clark (1971 days ago) , ...
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