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Ch 13 - Chapter 13 Click to edit Master subtitle style...

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Click to edit Master subtitle style Chapter - 13 Logical Architecture and UML Package Diagrams
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Chapter Objectives Introduce a logical architecture using layers Illustrate the logical architecture using UML package diagrams
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Logical Architecture Large-scale organization of software classes into Packages (namespaces) Subsystems Layers
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Layer User Interface Application logic and domain objects Software objects representing domain concepts e.g. Sales Technical Services General purpose objects that provide supporting technical services Interfacing with a database Error logging
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Layer Architecture Strict Layer only calls upon services of layer directly below Common in network protocol stacks Not in information systems Relaxed Higher layer calls upon several lower layers UI layer calling on subordinate application logic layer and also elements of a technical service layer
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Applying UML: Package Diagrams
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