1. 13 1313 CHAPTER Systems Analysis and Design

2. 13 © The McGraw-Hill Companies, Inc. 2002 Objectives Phases of systems life cycle –ID needs and possible solutions –Analyze and evaluate systems –ID, acquire and test systems –Implement new/revise old –Systems audits/periodic evals

3. 13 © The McGraw-Hill Companies, Inc. 2002 System Analysis and Design Critical to today’s businesses May need to change Problem-solving procedure –Examine system –Improve system if needed

4. 13 © The McGraw-Hill Companies, Inc. 2002 Steps Preliminary investigation Analysis Design Development Implementation Maintenance

5. 13 © The McGraw-Hill Companies, Inc. 2002 Phase 1 – Investigation Define problem(s) Suggest alternatives Short summary report

6. 13 © The McGraw-Hill Companies, Inc. 2002 Phase 2 – Analysis Gathering data Analyze data Document systems analysis

7. 13 © The McGraw-Hill Companies, Inc. 2002 Phase 3: Design Design alternative system Select best system Write comparative design report

8. 13 © The McGraw-Hill Companies, Inc. 2002 Phase 4: Development Developing software Acquiring hardware Testing the new system

9. 13 © The McGraw-Hill Companies, Inc. 2002 Phase 5: Implementation New system installed Types of conversion Training

10. 13 © The McGraw-Hill Companies, Inc. 2002 Phase 6: Maintenance Ongoing activity Systems audit Periodic evaluation

11. 13 © The McGraw-Hill Companies, Inc. 2002 Systems Development Alternatives Prototyping RAD

12. 13 © The McGraw-Hill Companies, Inc. 2002 A Look Into the Future Pace of business rapid Increased use of RAD and prototyping Increased use of outside consulting

13. 13 © The McGraw-Hill Companies, Inc. 2002