3.1. Domains
Domains represent the different subject matters that we need to understand to build a system.
Definition: A domain is an autonomous, real, hypothetical, or abstract world inhabited by a set of conceptual entities that behave according to characteristic rules and policies.
For a given system, we first identify the several domains that make up the system as a whole. Generally, systems comprise domains such as an application, a bookstore for example; some implementation technologies, such as Java, HTML, a relational database, and XML; and some intermediate abstractions, such as a Web GUI, messaging, and workflow.
We then understand and model the application and intermediate abstractions using executable UML and apply various implementation ...
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