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copied!<p><strong>Class diagrams can be used for Domain Model: Conceptual Classes</strong> </p> <p>In Object Oriented analysis, we can create <strong>domain models</strong></p> <blockquote> <p>A domain model is the visual representation of real situation objects in the domain-problem space.</p> </blockquote> <p><em>Why Create Domain Model?</em></p> <p>To understand key concepts and the vocabulary of domain-problem space.</p> <p>And</p> <p><em>While we are developing software classes ,Domain classes give us inspiration.</em></p> <p>For example here is a partial domain model for a Monopoly Game.</p> <p><img src="https://i.stack.imgur.com/YT8MJ.png" alt="enter image description here"></p> <p>In this diagram "Die" is a real world "Die". And our aim is to understand "Monopoly" game.</p> <p><strong>Class diagramas can be used for Implementation : Software Classes</strong> </p> <p>They are classes which we (will) implement in a programming language.They represent software abstractions. They are inspired from domain model but there is no one to one mapping between them.</p> <p>Here is a sample partial simple Software Class diagram for Monopoly Game</p> <p><img src="https://i.stack.imgur.com/BCuuj.png" alt="enter image description here"></p> <p><strong>Even you can use UML class diagram just explaining some concepts in any domain</strong> [ not related to any software development activity]</p> <p><img src="https://i.stack.imgur.com/JZqhM.png" alt="enter image description here"></p>

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