Chapter 03

Chapter 03 - Systems Analysis & Design 7th Edition...

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7 th Edition Chapter 3
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2 Phase Description Systems analysis is the second of five phases in the systems development life cycle (SDLC) Uses requirements modeling and data and process modeling to represent the new system Before proceeding to the next phase, systems design, you will consider system development strategies
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3 Chapter Objectives Describe systems analysis phase activities and the end product of the systems analysis phase Explain joint application development (JAD) and rapid application development (RAD) Understand how systems analysts use a functional decomposition diagram (FDD) Describe the Unified Modeling Language (UML) and explain use case diagrams and sequence diagrams
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4 Chapter Objectives List and describe system requirements, including outputs, inputs, processes, performance, and controls Explain the importance of scalability in system design Use fact-finding techniques, including interviews, documentation review, observation, questionnaires, sampling, and research
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5 Chapter Objectives Define total cost of ownership (TCO) and explain the concept Conduct a successful interview Develop effective documentation methods to use during systems development
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6 Introduction This chapter describes requirements modeling techniques and team-based methods that systems analysts use to visualize and document new systems The chapter then discusses system requirements and fact-finding techniques, which include interviewing, documentation review, observation, surveys and questionnaires, sampling, and research
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7 Introduction
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8 Systems Analysis Phase Overview The overall objective is to: understand the proposed project ensure that it will support business requirements build a solid foundation for system development You use a models and other documentation tools to visualize and describe the proposed system
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9 Systems Analysis Phase Overview Systems Analysis Activities Requirements modeling involves fact- finding to describe the current system and identify the requirements of the new system Outputs Inputs Processes Performance Security
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10 Systems Analysis Phase Overview Systems Analysis Activities Activities are very interactive, not sequential as shown in the waterfall model Deliverable at the end: System requirements document
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11 Systems Analysis Phase Overview Systems Analysis Activities Requirements modeling – chapter 3 Data and process modeling – chapter 4 Object-modeling – chapter 5 Development strategies - chapter 6
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12 Systems Analysis Phase Overview Systems Analysis Skills Analytical skills Interpersonal skills Team-Oriented Methods and Techniques Joint application development (JAD) Rapid application development (RAD)
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13 Joint Application Development User Involvement Users have a vital stake in an information system and they should participate fully
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Chapter 03 - Systems Analysis & Design 7th Edition...

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