ch02class - Systems Analysis and Design in a Changing World...

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2 Systems Analysis and Design in a Changing World, Fourth Edition
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2 Systems Analysis and Design in a Changing World, 2 Information System Development Phases
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2 Systems Analysis and Design in a Changing World, 3 “Waterfall” Approach to the SDLC
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2 Systems Analysis and Design in a Changing World, 4 Modified Waterfall Approach with Overlapping Phases (Figure 2-5)
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2 Systems Analysis and Design in a Changing World, 5 Newer Adaptive Approaches to the SDLC Based on spiral model Project cycles through development activities over and over until project is complete Prototype created by end of each cycle Focuses on mitigating risk Iteration – Work activities are repeated Each iteration refines previous result Approach assumes no one gets it right the first time There are a series of mini projects for each iteration
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2 Systems Analysis and Design in a Changing World, 6 The Spiral Life Cycle Model (Figure 2-6)
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2 Systems Analysis and Design in a Changing World, 7 Iteration of System Development Activities (Figure 2-7)
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2 Systems Analysis and Design in a Changing World, 8 Activities of Planning Phase of SDLC Define business problem and scope Produce detailed project schedule Confirm project feasibility Economic, organizational, technical, resource, and schedule Staff the project (resource management) Launch project official announcement
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2 Systems Analysis and Design in a Changing World, 9 Activities of Analysis Phase of SDLC Gather information to learn problem domain Define system requirements Build prototypes for discovery of requirements Prioritize requirements Generate and evaluate alternatives Review recommendations with management
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2 Systems Analysis and Design in a Changing World, 10 Activities of Design Phase of SDLC Design and integrate the network Design the application architecture Design the user interfaces Design the system interfaces Design and integrate the database Prototype for design details Design and integrate system controls
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2 Systems Analysis and Design in a Changing World, 11 Activities of Implementation Phase of SDLC Construct software components Verify and test Convert data Train users and document the system Install the system
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2 Systems Analysis and Design in a Changing World,
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