SEQUEL: A Structured English Query Language

Donald D. Chamberlin, Raymond F. Boyce. SEQUEL: A Structured English Query Language. In Randall Rustin, editor, Proceedings of 1974 ACM-SIGMOD Workshop on Data Description, Access and Control, Ann Arbor, Michigan, May 1-3, 1974, 2 Volumes. pages 249-264, ACM, 1974. [doi]

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