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Communications of the ACM

Communications of the ACM

RECOL—a retrieval command language

An interrogation scheme is described for the retrieval and manipulation of data file records. The language of the interrogation scheme allows for selecting file records with the use of logical condition statements, defining record classes, associating file records, editing printed output, and summarizing the results of the above operations. Some examples of a typical file application and the more significant features of a particular machine implementation are given.

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