An Information Algebra - Phase I Report-Language Structure Group of the CODASYL Development Committee This report represents the results of the first phase of the work of the Language Structure Group. The goal of this work is to arrive at a proper structure for a machine-independent problem-defining language, at the systems level of data processing. The report is based, for the most part, on a mathematical model called "An Information Algebra" developed primarily by R. Bosak. It is hoped that this report will be read (a) with avid interest by programming language designers and implementors, and all those interested in developing a theoretical approach to data processing; (b) with interest and understanding by professional programmers and systems analysts; and (c) with appreciation by the businessman-analyst-manager. The authors have not attempted an exhaustive discourse in this report. Rather, they have tried to present a philosophy to the professional people who are vitally concerned with providing a working language for the systems analyst's use. They trust that the ideas in this report will stimulate others to think along similar lines. Questions and comments will be welcomed, and can be addressed to any of the members of the Language Structure Group: Robert Bosak, System Development Corporation; Richard F. Clippinger, Honeywell EDP Division; Carey Dobbs, Remington Rand Univac Division; Roy Goldfinger (Chairman), IBM Corporation; Renee B. Jasper, Navy Management Office; William Keating, National Cash Register; George Kendrick, General Electric Company; Jean E. Sammet, IBM Corporation. CACM April, 1962 CA620401 JB March 20, 1978 2:40 PM 1135 5 616 1136 5 616 2710 5 616 2765 5 616 2888 5 616 2906 5 616 493 5 616 616 5 616 616 5 616 616 5 616 729 5 616 1515 6 616 288 6 616 1936 6 616 1976 6 616 2046 6 616 2046 6 616 2046 6 616 2451 6 616 2452 6 616 2715 6 616 493 6 616 616 6 616 616 6 616 616 6 616 616 6 616 616 6 616 616 6 616 616 6 616 616 6 616 657 6 616