DEV475 Mastering Object-Oriented Analysis and Design with UML ...

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DEV475 Mastering Object-Oriented Analysis and Design with UMLIdentify Key AbstractionsArchitectural Analysis Steps• Key Concepts• Define the High-Level Organization ofSubsystems• Identify Analysis mechanisms• Identify Key Abstractions• Create Use-Case Realizations• CheckpointsMastering Object Oriented Analysis and Design with UMLCopyright © 2003 Rational Software, all rights reserved 28This is where the key abstractions for the problem domain are defined. Furthermore,this is where the “vocabulary” of the software system is established.The purpose of this step is to "prime the pump" for analysis by identifying anddefining the key abstractions that the system must handle. These may have beeninitially identified during business modeling and requirement activities. However,during those activities, the focus was on the problem domain. During analysis anddesign, our focus is more on the solution domain.5 - 28
Module 5 - Architectural AnalysisWhat Are Key Abstractions?What Are Key Abstractions?• A key abstraction is a concept, normallyuncovered in Requirements, that thesystem must be able to handle• Sources for key abstractions• Domain knowledge• Requirements• Glossary• Domain Model, or the BusinessModel (if one exists)Mastering Object Oriented Analysis and Design with UMLCopyright © 2003 Rational Software, all rights reserved 29Requirements and Business Modeling activities usually uncover key concepts that thesystem must be able to handle. These concepts manifest themselves as key designabstractions. Because of the work already done, there is no need to repeat theidentification work again during Use-Case Analysis. To take advantage of existingknowledge, we identify preliminary entity analysis classes to represent these keyabstractions on the basis of general knowledge of the system. Sources include theRequirements, the Glossary, and in particular, the Domain Model, or the BusinessObject Model, if you have one.5 - 29
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