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Structured Development for Real-Time Systems by Stephen J. Mellor, Paul T. Ward

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Chapter 9. Executing the Transformation Schema

Introduction

Despite our support for the use of graphics in system modeling, we are aware that problems have arisen in systems development because of misuse of graphic-modeling notations. The mere use of a standard set of symbols does not assure that a graphic model will be internally consistent or unambiguous.

The problem of misuse of descriptive tools is obviously not confined to graphics. The use of written text is notorious for uncontrolled redundancy, internal inconsistency, and the possibility of multiple interpretations. However, great strides have been made in ensuring the rigorous use of text. A high-level programming language is simply a formalized natural-language subset whose interpretation ...

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