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

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Chapter 12. Organizing the Model

Introduction

A system is modeled schematically by the data schema and transformation schema and then modeled precisely by detailed specifications of each component of the schemas. The detailed specifications, when related as shown by the schemas, are a complete representation of the system.

We now have enough of a conceptual framework to put together a model for a system of any size. However, for a system that is non-trivial, a single schematic transformation or data model would be too complex for convenient comprehension. Our problem, then, is to organize the model for the maximum convenience of the reader. This is far more than a “packaging” problem. The utility of a model as a vehicle for systems development depends ...

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