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 are 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. CACM March, 1963 Climenson, W. D. CA630328 JB March 14, 1978 12:42 PM 1309 4 892 1324 4 892 892 4 892 892 4 892 653 5 892 656 5 892 892 5 892 892 5 892 892 5 892