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Systems Investigation and Analysis

Systems Investigation and Analysis. Chapter 12. Chapter 12 Outline. An Overview of Systems Development Systems Development Life Cycles Factors Affecting Systems Development Success Systems Investigation Systems Analysis. An Overview of Systems Development.

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Systems Investigation and Analysis

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  1. Systems Investigation and Analysis Chapter 12 Principles of Information Systems, Sixth Edition

  2. Chapter 12 Outline • An Overview of Systems Development • Systems Development Life Cycles • Factors Affecting Systems Development Success • Systems Investigation • Systems Analysis Principles of Information Systems, Sixth Edition

  3. An Overview of Systems Development Principles of Information Systems, Sixth Edition

  4. Participants in Systems Development Principles of Information Systems, Sixth Edition

  5. Initiating Systems Development Principles of Information Systems, Sixth Edition

  6. Information Systems Planning Principles of Information Systems, Sixth Edition

  7. Aligning Corporate and IS Goals Principles of Information Systems, Sixth Edition

  8. Developing a Competitive Advantage • Creative analysis • Critical analysis • Going beyond automating manual systems • Question assumptions • Identify and resolve conflicting objectives Principles of Information Systems, Sixth Edition

  9. Establishing Objectives for Systems Development • Performance objectives • Output quality or usefulness • Output format quality or usefulness • Speed at which output is produced • Cost objectives • Development costs • Fixed investments • Ongoing operating costs • Uniqueness costs Principles of Information Systems, Sixth Edition

  10. Systems Development and E-Commerce • Internet technology - enables companies to extend their information systems beyond their boundaries to reach their customers, suppliers, and partners. • Dynamic Core Business Application that runs over the Web - must be reliable and fault tolerant, providing continuous availability while processing all transactions accurately. Principles of Information Systems, Sixth Edition

  11. Trends in Systems Development and ERP • ERP vendor as one-stop provider • Applications to integrate with ERP systems • External consulting Principles of Information Systems, Sixth Edition

  12. Systems Development Life Cycles Principles of Information Systems, Sixth Edition

  13. Factors Affecting Systems Development Success Principles of Information Systems, Sixth Edition

  14. Systems Development Life Cycles Principles of Information Systems, Sixth Edition

  15. The Traditional Systems DevelopmentLife Cycle Principles of Information Systems, Sixth Edition

  16. Advantages and Disadvantages of Traditional SDLC Principles of Information Systems, Sixth Edition

  17. Prototyping Principles of Information Systems, Sixth Edition

  18. Prototyping Principles of Information Systems, Sixth Edition

  19. Advantages and Disadvantages of Prototyping Principles of Information Systems, Sixth Edition

  20. Rapid Application Development (RAD) Principles of Information Systems, Sixth Edition

  21. Reasons for Outsourcing Principles of Information Systems, Sixth Edition

  22. Factors Affecting Systems Development Success • Degree of Change • Continuous Improvement versus Reengineering • Managing change Principles of Information Systems, Sixth Edition

  23. Factors Affecting SystemsDevelopment Success Principles of Information Systems, Sixth Edition

  24. Quality and Standards Principles of Information Systems, Sixth Edition

  25. The Capability Maturity Model (CMM) Principles of Information Systems, Sixth Edition

  26. Project Management • Project schedule • Project milestone • Project deadline • Critical path Principles of Information Systems, Sixth Edition

  27. Use of Project Management Tools Principles of Information Systems, Sixth Edition

  28. Use of Project Management Tools Principles of Information Systems, Sixth Edition

  29. Computer-Aided Software Engineering (CASE) Tools Automate many of the tasks required in a systems development effort and enforce adherence to the SDLC, thus instilling a high degree of rigor and standardization to the entire systems development process • Upper-CASE tools - CASE packages that focus on activities associated with the early stages of systems development. • Lower-CASE tools - focus on the later stages of systems development and are capable of automatically generating structured program code. • Integrated-CASE tools - provide links between upper- and lower-CASE packages. Principles of Information Systems, Sixth Edition

  30. CASE Tools Principles of Information Systems, Sixth Edition

  31. Object-Oriented Systems Development Object-oriented systems development typically involves: • Identifying potential problems and opportunities within the organization that would be appropriate for the OO approach • Defining the kind of system users require • Designing the system • Programming or modifying modules • Evaluation by users • Periodic review and modification Principles of Information Systems, Sixth Edition

  32. Systems Investigation Principles of Information Systems, Sixth Edition

  33. Systems Investigation In general, systems investigation attempts to uncover answers to the following questions: • What primary problems might a new or enhanced system solve? • What opportunities might a new or enhanced system provide? • What new hardware, software, databases, telecommunications, personnel, or procedures will improve an existing system or are required in a new system? • What are the potential costs (variable and fixed)? • What are the associated risks? Principles of Information Systems, Sixth Edition

  34. Participants in Systems Investigation Principles of Information Systems, Sixth Edition

  35. Feasibility Analysis Principles of Information Systems, Sixth Edition

  36. Sample Net Present Value Calculation Principles of Information Systems, Sixth Edition

  37. Object-Oriented Systems Investigation Principles of Information Systems, Sixth Edition

  38. The Systems Investigation Report Principles of Information Systems, Sixth Edition

  39. Systems Analysis Principles of Information Systems, Sixth Edition

  40. Identifying Sources of Data Principles of Information Systems, Sixth Edition

  41. Collecting Data Principles of Information Systems, Sixth Edition

  42. Data Analysis • Data modeling • Activity modeling • Application flowcharts • Grid charts • CASE tools Principles of Information Systems, Sixth Edition

  43. Data and Activity Modeling Principles of Information Systems, Sixth Edition

  44. Application Flowcharts Principles of Information Systems, Sixth Edition

  45. Grid Charts Principles of Information Systems, Sixth Edition

  46. Requirements Analysis • Asking directly • Critical success factors (CSFs) • The IS plan • Screen and report layout Principles of Information Systems, Sixth Edition

  47. The IS Plan Principles of Information Systems, Sixth Edition

  48. Screen and Report Layout Principles of Information Systems, Sixth Edition

  49. Object-Oriented Systems Analysis Principles of Information Systems, Sixth Edition

  50. The Systems Analysis Report Principles of Information Systems, Sixth Edition

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