chapter02new - Object-Oriented Analysis and Design with the...

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2 Object-Oriented Analysis and Design with the Unified Process Objectives t Explain the purpose and various phases of the traditional systems development life cycle (SDLC) Explain when to use an adaptive approach to the SDLC in place of the more predictive traditional SDLC Describe how the more adaptive Unified Process (UP) life cycle uses iterative and incremental development Explain the differences between a model, a tool, a technique, and a methodology
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3 Object-Oriented Analysis and Design with the Unified Process Objectives (continued) t Describe the Unified Process as a comprehensive system development methodology that combines proven best practices with the iterative UP life cycle Describe the disciplines used in a UP development project Describe the key features of the object-oriented approach Explain how automated tools are used in system development
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4 Object-Oriented Analysis and Design with the Unified Process Overview t Traditional systems development life cycle (SDLC) Unified Process (UP) r Iterative, incremental, adaptive approach to life cycle Nine disciplines: six for system development, three for support Review object-oriented (OO) concepts Describe computer support tools such as CASE Apply UP to the development project of RMO
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5 Object-Oriented Analysis and Design with the Unified Process The Systems Development Life Cycle t SDLC: process of building, deploying, using, and updating an information system Text focus: initial development project Chief variations of SDLC r Predictive: project planned entirely in advance Adaptive: planning leaves room for contingencies Pure approaches to SDLC are rare Most projects have predictive and adaptive elements
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6 Object-Oriented Analysis and Design with the Unified Process Figure 2-1 Predictive versus adaptive approaches to the SDLC
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7 Object-Oriented Analysis and Design with the Unified Process The Traditional Predictive SDLC Approaches t Five activities or phases in a project r Planning, analysis, design, implementation, support Pure waterfall approach (predictive SDLC) Assumes project phases can be sequentially executed Project drops over the “waterfall” into the next phase Modified waterfall approach Tempers pure waterfall by recognizing phase overlap Informs many current projects and company systems
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8 Object-Oriented Analysis and Design with the Unified Process Figure 2-3 SDLC Phases and Objectives
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9 Object-Oriented Analysis and Design with the Unified Process Figure 2-4 The Waterfall Approach to the SDLC
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10 Object-Oriented Analysis and Design with the Unified Process The Newer Adaptive Approaches to the SDLC t The spiral model: early form of adaptive SDLC r Activities radiate from center starting point Prototypes are artifacts of each phase Iterative problem solving: repeats activities Several approaches to structuring iterations Define and implement the key system functions Focus on one subsystem at a time Define by complexity or risk of certain components Complete parts incrementally
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11 Object-Oriented Analysis and Design with the Unified Process Figure 2-6 The Spiral Life Cycle Model
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chapter02new - Object-Oriented Analysis and Design with the...

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