10.2. Conceptual Class Identification

Our goal is to create a domain model of interesting or meaningful conceptual classes in the domain of interest (sales). In this case, that means concepts related to the use case Process Sale.

In iterative development, one incrementally builds a domain model over several iterations in the elaboration phase. In each, the domain model is limited to the prior and current scenarios under consideration, rather than a “big bang” model which early on attempts to capture all possible conceptual classes and relationships. For example, this iteration is limited to a simplified cash-only Process Sale scenario; therefore, a partial domain model will be created to reflect just that—not more.

The central task is therefore ...

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