Abstract
Abstract : Four formal software design methodologies were described and briefly analyzed: (1) Structured Design, (2) Jackson's Methodology, (3) Integrated Software Development System (Higher Order Software), and (4) Warnier's 'Logical Construction of Programs.' Relative strengths, weaknesses, and commonalities among the methods were identified and human factors problem areas were analyzed. Several major human factors deficiencies and problems were identified. Formal software design methods differ in terms of: Applicability to problems of different types, size or complexity; susceptibility to design errors; and constraints and limitations imposed on the software designer. Various methods limit the designer's ability to select an appropriate problem representation, prevent the designer from utilizing relevant knowledge and experience, or impose potentially significant information loads on the designer. Improvements in design methodologies require a better understanding of the problem-solving behavior of software designers; potential research topics in this area were identified.
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