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Structured Development for Real-Time Systems, Volume 2: Essential Modeling Techniques by Stephen J. Mellor, Paul T. Ward

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6 Completing the Essential Model – the Lower Levels

6.1 Introduction

In addition to being unpresentable, transformation and data models derived from an event list are typically incomplete. Although the overall data and activity patterns are present, the details required for a rigorously complete model are not. In this chapter we will discuss the issues involved in adding the necessary details to finish the model.

Consider the portion of the Defect Inspection System (Appendix D) shown in Figure 6.1. As a result of the derivation process based on the event list, a preliminary model is likely to contain:

Image    the details of when the Scan Sheet transformation ...

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