Strategies for Real-Time System Specification

Appendix C. Information Modeling: The Third Perspective

In this book, we have covered the development of the system requirements and architecture models from the process and control perspectives. There are other perspectives from which the system may be modeled. Although these are beyond the scope of the book, we shall outline how one of them, the information model, fits into the overall scheme.

The requirements model, as we present it, represents system requirements in terms of processing and control functions. Another aspect of the requirements can be represented by the information model. For stored data systems, the data and control information structure, and the access relationship of that structure to the process and control models, need ...