Ch 9 - Chapter - 9 Click to edit Master subtitle style D...

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Unformatted text preview: Chapter - 9 Click to edit Master subtitle style D omain M odels Chapter Objectives Identify conceptual classes related to the current iteration Create an initial domain model Model appropriate attributes and associations Domain Model M eans a r epr esentati on of r eal -si tuati on conceptual cl asses, not of softwar e objects. Does not mean a set of di agr ams descr i bi ng softwar e cl asses, the domai n l ayer of a softwar e ar chi tectur e, or softwar e objects wi th r esponsi bi l i ti es. I s a speci al i zati on of the UP Busi ness Object M odel Create a Domain Model Bounded by the current iteration under design: 1. Find the conceptual classes 2. Draw as classes in UML class diagram 3. Add associations and attributes Conceptual Classes Symbol Words or images representing conceptual class E.g. Sales Intension Definition of a conceptual class Represents the event of a purchase transaction Extension Set of examples to which a conceptual class applies All examples of sales (set of all sale instances) How To Find Conceptual C1. Reuse or modify existing models lasses 2. Use a category list 3. Identify noun phrases (use car e) Mechanical noun-to-class mapping not possible Words in natural language ambiguous ...
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Ch 9 - Chapter - 9 Click to edit Master subtitle style D...

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