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Principles of Information Systems Eighth Edition

Learn about systems development participants, investigation, analysis, and establishing objectives for successful systems development. Dive into systems development life cycles, project management, tools, feasibility analysis, and requirements analysis.

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Principles of Information Systems Eighth Edition

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Presentation Transcript

  1. Principles of Information SystemsEighth Edition Chapter 12 Systems Development: Investigation and Analysis

  2. An Overview of Systems Development

  3. Participants in Systems Development Systems Analysts Specialize in analyzing & designing business systems. Stakeholders Benefit from the systems develop- ment effort Programmers Modify/develop programs to satisfy user requirements. Users Interact with the system regularly

  4. Initiating Systems Development

  5. Information Systems Planning

  6. Developing a Competitive Advantage • Creative analysis Investigates new approaches to existing problems. • Critical analysis Unbiased & careful questioning of whether system elements are related in the most effective/ efficient ways.

  7. 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

  8. Systems Development Life Cycles

  9. Systems Development Life Cycles

  10. The Traditional Systems DevelopmentLife Cycle

  11. Factors Affecting Systems Development Success • Degree of Change • Continuous Improvement versus Reengineering • Managing change

  12. Factors Affecting SystemsDevelopment Success Managing Change Requires the ability to recognize existing or potential problems & deal with them before they become a serious threat to the success of the new/ modified system

  13. Project Management • Project schedule • Project milestone • Project deadline • Critical path

  14. Use of Project Management Tools

  15. Use of Project Management Tools

  16. 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?

  17. Participants in Systems Investigation

  18. Feasibility Analysis

  19. The Systems Investigation Report

  20. Systems Analysis

  21. Identifying Sources of Data

  22. Collecting Data

  23. Data Analysis • Data modeling • Activity modeling • Application flowcharts • Grid charts • CASE tools

  24. Requirements Analysis • Asking directly • Critical success factors (CSFs) • The IS plan • Screen and report layout

  25. The IS Plan

  26. Screen and Report Layout

  27. The Systems Analysis Report

  28. Summary • Systems development team - of stakeholders, users, managers, systems development specialists, and various support personnel • Five phases of the traditional SDLC - investigation, analysis, design, implementation, and maintenance and review • Systems investigation participants - stakeholders, users, managers, employees, analysts, and programmers

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