Relationships between the Core Concepts
To put views and viewpoints in context, we can now extend the conceptual model we introduced in Chapter 2 to illustrate how views and viewpoints contribute to the overall picture (see Figure 3-1).
Figure 3-1. Views and Viewpoints in Context
We have added the following relationships to the diagram we originally presented as Figure 2-5.
- A viewpoint defines the aims, intended audience, and content of a class of views and defines the concerns that views of this class will address.
- A view conforms to a viewpoint and so communicates the resolution of a number of concerns (and a resolution of a concern may be communicated in a number of views).
- An AD comprises a number of views.