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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|dataservices14:Home] all utilize the caGrid Query Language [CQL|dataservices:CQL] and [CQL 2|dataservices:CQL 2], 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 the Distributed caGrid Query Language ([DCQL|fqp14:DCQL] or [DCQL 2|fqp:DCQL 2]), which is an extension to CQL which allows for the expression of such concepts as joins against other data services, aggregations, and target data services.
h5. View the [fqp:Project Status].