On the criteria to be used in decomposing systems into modules
Communications of the ACM
A relational model of data for large shared data banks
Communications of the ACM
Toward an understanding of data structures
Communications of the ACM
A method for data translation using the Stored-Data Definition and Translation Task Group languages
SIGFIDET '72 Proceedings of 1972 ACM-SIGFIDET workshop on Data description, access and control
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This paper reports work toward melding some ideas from data base management with currently popular views of structured programming. The basic idea is to allow all data structures used inside programs (instead of just those in an external data base) to be described at multiple conceptual levels by a separate definition. This approach brings to programmers the benefits of data independence and also allows structured programming to have its hitherto unrealized full effect on data.