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Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
Principles of Information Systems - Chapter 12
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Principles of Information Systems - Chapter 12

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Principles of Information Systems Sixth Edition, Written by Ralph Star, George Reynolds

Principles of Information Systems Sixth Edition, Written by Ralph Star, George Reynolds

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  • Systems development involves creating new systems or modifying existing business systems. After studying this chapter, you should be able to address the objectives on the next 3 slides.
  • Transcript

    • 1. Systems Investigation and Analysis Chapter 12
    • 2. Principles and Learning Objectives <ul><li>Effective systems development requires a team effort of stakeholders, users, managers, systems development specialists, and various support personnel, and it starts with careful planning. </li></ul><ul><ul><li>Identify the key participants in the systems development process and discuss their roles. </li></ul></ul><ul><ul><li>Define the term information systems planning and list several reasons for initiating a systems project. </li></ul></ul><ul><ul><li>Identify important system performance requirements for applications that run on the Internet or a corporate intranet or extranet. </li></ul></ul><ul><ul><li>Discuss three trends that illustrate the impact of enterprise resource planning software packages on systems development. </li></ul></ul>
    • 3. Principles and Learning Objectives <ul><li>Systems development often uses tools to select, implement, and monitor projects, including net present value (NPV), prototyping, rapid application development, CASE tools, and object-oriented development. </li></ul><ul><ul><li>Discuss the key features, advantages, and disadvantages of the traditional, prototyping, rapid application development, and end-user systems development life cycles. </li></ul></ul><ul><ul><li>Identify several factors that influence the success or failure of a systems development project. </li></ul></ul><ul><ul><li>Discuss the use of CASE tools and the object-oriented approach to systems development. </li></ul></ul>
    • 4. Principles and Learning Objectives <ul><li>Systems development starts with investigation and analysis of existing systems. </li></ul><ul><ul><li>State the purpose of systems investigation. </li></ul></ul><ul><ul><li>Discuss the importance of performance and cost objectives. </li></ul></ul><ul><ul><li>State the purpose of systems analysis and discuss some of the tools and techniques used in this phase of systems development. </li></ul></ul>
    • 5. An Overview of Systems Development
    • 6. Participants in Systems Development
    • 7. Initiating Systems Development
    • 8. Information Systems Planning
    • 9. Aligning Corporate and IS Goals
    • 10. Developing a Competitive Advantage <ul><li>Creative analysis </li></ul><ul><li>Critical analysis </li></ul><ul><ul><li>Going beyond automating manual systems </li></ul></ul><ul><ul><li>Question assumptions </li></ul></ul><ul><ul><li>Identify and resolve conflicting objectives </li></ul></ul>
    • 11. Establishing Objectives for Systems Development <ul><li>Performance objectives </li></ul><ul><ul><li>Output quality or usefulness </li></ul></ul><ul><ul><li>Output format quality or usefulness </li></ul></ul><ul><ul><li>Speed at which output is produced </li></ul></ul><ul><li>Cost objectives </li></ul><ul><ul><li>Development costs </li></ul></ul><ul><ul><li>Fixed investments </li></ul></ul><ul><ul><li>Ongoing operating costs </li></ul></ul><ul><ul><li>Uniqueness costs </li></ul></ul>
    • 12. Systems Development and E-Commerce <ul><li>Internet technology - enables companies to extend their information systems beyond their boundaries to reach their customers, suppliers, and partners. </li></ul><ul><li>Dynamic Core Business Application that runs over the Web - must be reliable and fault tolerant, providing continuous availability while processing all transactions accurately. </li></ul>
    • 13. Trends in Systems Development and ERP <ul><li>ERP vendor as one-stop provider </li></ul><ul><li>Applications to integrate with ERP systems </li></ul><ul><li>External consulting </li></ul>
    • 14. Systems Development Life Cycles
    • 15. Systems Development Life Cycles
    • 16. The Traditional Systems Development Life Cycle
    • 17. Advantages and Disadvantages of Traditional SDLC
    • 18. Prototyping
    • 19. Prototyping
    • 20. Advantages and Disadvantages of Prototyping
    • 21. Rapid Application Development (RAD)
    • 22. Reasons for Outsourcing
    • 23. Factors Affecting Systems Development Success <ul><li>Degree of Change </li></ul><ul><ul><li>Continuous Improvement versus Reengineering </li></ul></ul><ul><ul><li>Managing change </li></ul></ul>
    • 24. Factors Affecting Systems Development Success
    • 25. Quality and Standards
    • 26. The Capability Maturity Model (CMM)
    • 27. Project Management <ul><li>Project schedule </li></ul><ul><li>Project milestone </li></ul><ul><li>Project deadline </li></ul><ul><li>Critical path </li></ul>
    • 28. Use of Project Management Tools
    • 29. Use of Project Management Tools
    • 30. Computer-Aided Software Engineering (CASE) Tools <ul><li>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 </li></ul><ul><li>Upper-CASE tools - CASE packages that focus on activities associated with the early stages of systems development. </li></ul><ul><li>Lower-CASE tools - focus on the later stages of systems development and are capable of automatically generating structured program code. </li></ul><ul><li>Integrated-CASE tools - provide links between upper- and lower-CASE packages. </li></ul>
    • 31. CASE Tools
    • 32. Object-Oriented Systems Development <ul><li>Object-oriented systems development typically involves: </li></ul><ul><li>Identifying potential problems and opportunities within the organization that would be appropriate for the OO approach </li></ul><ul><li>Defining the kind of system users require </li></ul><ul><li>Designing the system </li></ul><ul><li>Programming or modifying modules </li></ul><ul><li>Evaluation by users </li></ul><ul><li>Periodic review and modification </li></ul>
    • 33. Systems Investigation <ul><li>In general, systems investigation attempts to uncover answers to the following questions: </li></ul><ul><ul><li>What primary problems might a new or enhanced system solve? </li></ul></ul><ul><ul><li>What opportunities might a new or enhanced system provide? </li></ul></ul><ul><ul><li>What new hardware, software, databases, telecommunications, personnel, or procedures will improve an existing system or are required in a new system? </li></ul></ul><ul><ul><li>What are the potential costs (variable and fixed)? </li></ul></ul><ul><ul><li>What are the associated risks? </li></ul></ul>
    • 34. Participants in Systems Investigation
    • 35. Feasibility Analysis
    • 36. Sample Net Present Value Calculation
    • 37. Object-Oriented Systems Investigation
    • 38. The Systems Investigation Report
    • 39. Systems Analysis
    • 40. Identifying Sources of Data
    • 41. Collecting Data
    • 42. Data Analysis <ul><li>Data modeling </li></ul><ul><li>Activity modeling </li></ul><ul><li>Application flowcharts </li></ul><ul><li>Grid charts </li></ul><ul><li>CASE tools </li></ul>
    • 43. Data and Activity Modeling
    • 44. Application Flowcharts
    • 45. Grid Charts
    • 46. Requirements Analysis <ul><li>Asking directly </li></ul><ul><li>Critical success factors (CSFs) </li></ul><ul><li>The IS plan </li></ul><ul><li>Screen and report layout </li></ul>
    • 47. The IS Plan
    • 48. Screen and Report Layout
    • 49. Object-Oriented Systems Analysis
    • 50. The Systems Analysis Report
    • 51. Summary <ul><li>Systems development team - of stakeholders, users, managers, systems development specialists, and various support personnel </li></ul><ul><li>Five phases of the traditional SDLC - investigation, analysis, design, implementation, and maintenance and review </li></ul><ul><li>Systems investigation participants - stakeholders, users, managers, employees, analysts, and programmers </li></ul>

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