Strategies for Real-Time System Specification

Chapter 8. Requirements Dictionary

We have one more major component of the requirements model to describe, and although it has been left until last, it is in no sense less important than the others. On the contrary, it might well be considered the most important. We have described data flow diagrams, process specifications, control flow diagrams, control specifications, and timing specifications. The last component is the foundation on which all the data and control flows in all the diagrams and specifications are based. Our original composite diagram, Figure 3.1, shows the requirements dictionary off-line from the main structure, but it is a fundamental rule of the method that every data and control flow as well as every data and control store ...