1. Principles of Information Systems, Sixth Edition 1 Systems Design, Implementation, Maintenance, and Review Chapter 13

2. Principles of Information Systems, Sixth Edition 2 Chapter 13 Outline Systems Design Systems Implementation Systems Maintenance Systems Review

3. Principles of Information Systems, Sixth Edition 3 Systems Design

4. Principles of Information Systems, Sixth Edition 4 Top Uses for New Systems in Various Industries

5. Principles of Information Systems, Sixth Edition 5 Logical Design Output design: types, format, content, frequency Input design: types, format, content, frequency Process design: calculations, comparisons, manipulations File & database design: capabilities and organization Telecommunications design: high-level network description Procedures design: automated & manual Controls & security design Personnel & job design

6. Principles of Information Systems, Sixth Edition 6 Physical Design Hardware design Software design Database design Telecommunications design Personnel design Procedures and controls design

7. Principles of Information Systems, Sixth Edition 7 Special System Design Considerations Procedures for signing on Interactive processing Interactive dialog Preventing, detecting, and correcting errors

8. Principles of Information Systems, Sixth Edition 8 The Scope of Design

9. Principles of Information Systems, Sixth Edition 9 Procedures for Signing On

10. Principles of Information Systems, Sixth Edition 10 Interactive Processing

11. Principles of Information Systems, Sixth Edition 11 Emergency Alternate Procedures & Disaster Recovery Telecommunications backup Personnel backup Hardware backup Software and database backup

12. Principles of Information Systems, Sixth Edition 12 Hardware Backup Disaster recovery plans Hot site Cold site

13. Principles of Information Systems, Sixth Edition 13 Software & Database Backup Selective backups Incremental backups Image log

14. Principles of Information Systems, Sixth Edition 14 Preventing, Detecting, and Correcting Errors

15. Principles of Information Systems, Sixth Edition 15 Object-Oriented Design

16. Principles of Information Systems, Sixth Edition 16 Systems Controls Deterrence controls Input controls Processing controls Output controls Database controls Telecommunications controls Personnel controls

17. Principles of Information Systems, Sixth Edition 17 Request for Proposal

18. Principles of Information Systems, Sixth Edition 18 Financial Options

19. Principles of Information Systems, Sixth Edition 19 Cost/Benefit Analysis

20. Principles of Information Systems, Sixth Edition 20 Cost/Benefit Analysis

21. Principles of Information Systems, Sixth Edition 21 Evaluation Techniques Group consensus Benchmark tests Cost/benefit analysis Point evaluation

22. Principles of Information Systems, Sixth Edition 22 The Final Evaluation

23. Principles of Information Systems, Sixth Edition 23 Point Evaluation

24. Principles of Information Systems, Sixth Edition 24 Freezing Design Specifications

25. Principles of Information Systems, Sixth Edition 25 The Design Report

26. Principles of Information Systems, Sixth Edition 26 Systems Implementation

27. Principles of Information Systems, Sixth Edition 27 Systems Implementation

28. Principles of Information Systems, Sixth Edition 28 Acquiring Software: Make or Buy Software? Externally developed software –Lower cost –Lower risk –Ease of installation

29. Principles of Information Systems, Sixth Edition 29 Make or Buy Software Steps –Review needs, requirements, and costs –Acquire software –Modify or customize software –Acquire software interfaces –Test and accept the software –Maintain the software

30. Principles of Information Systems, Sixth Edition 30 In-House Developed Software Chief programmer teams The programming life cycle

31. Principles of Information Systems, Sixth Edition 31 Chief Programmer Teams

32. Principles of Information Systems, Sixth Edition 32 The Programming Life Cycle

33. Principles of Information Systems, Sixth Edition 33 Tools & Techniques for Software Development Cross-platform development Integrated development environments CASE tools Structured design Structured programming Structured walkthroughs

34. Principles of Information Systems, Sixth Edition 34 Characteristics of Structured Programming

35. Principles of Information Systems, Sixth Edition 35 Structured Design and Programming

36. Principles of Information Systems, Sixth Edition 36 Structured Design and Programming

37. Principles of Information Systems, Sixth Edition 37 Structured Walkthroughs

38. Principles of Information Systems, Sixth Edition 38 Additional Implementation Activities Acquiring database and telecommunication systems User preparation Hiring and training IS personnel Site preparation Data preparation

39. Principles of Information Systems, Sixth Edition 39 Additional Implementation Activities Installation Testing –Unit testing –System testing –Volume testing –Integration testing –Acceptance testing

40. Principles of Information Systems, Sixth Edition 40 Testing

41. Principles of Information Systems, Sixth Edition 41 Start-Up Approaches

42. Principles of Information Systems, Sixth Edition 42 Start-Up Approaches

43. Principles of Information Systems, Sixth Edition 43 Systems Maintenance

44. Principles of Information Systems, Sixth Edition 44 Reasons for Maintenance Changes in business processes Requests from stakeholders, users, or managers Errors in the program Technical and hardware problems Corporate mergers & acquisitions Government regulations Changes in the operating system or hardware

45. Principles of Information Systems, Sixth Edition 45 Types of Maintenance Slipstream upgrade Patch Release Version

46. Principles of Information Systems, Sixth Edition 46 The Financial Implications of Maintenance

47. Principles of Information Systems, Sixth Edition 47 The Relationship Between Maintenance and Design

48. Principles of Information Systems, Sixth Edition 48 Systems Review

49. Principles of Information Systems, Sixth Edition 49 Types of Review Procedures

50. Principles of Information Systems, Sixth Edition 50 Factors to Consider During Systems Review Mission Goals Hardware/software Database Telecommunications IS personnel Control Training Costs Complexity Reliability Efficiency Response time Documentation

51. Principles of Information Systems, Sixth Edition 51 Summary Systems design - preparing detailed design needs for a new system or modifying an existing system Systems implementation – installing the system and making everything, including users, ready for its operation Software - can be purchased from vendors or developed in-house - a decision termed the make-or-buy Systems maintenance - involves checking, changing, and enhancing the system to make it more useful in obtaining user and organizational goals Systems review - the process of analyzing systems to make sure that they are operating as intended

52. Principles of Information Systems, Sixth Edition 52 Principles and Learning Objectives Designing new systems or modifying existing ones should always be aimed at helping an organization achieve its goals. –State the purpose of systems design and discuss the differences between logical and physical systems design. –Outline key steps taken during the design phase. –Describe some considerations and diagrams used during object-oriented design. –Define the term RFP and discuss how this document is used to drive the acquisition of hardware and software. –Describe the techniques used to make systems selection evaluations.

53. Principles of Information Systems, Sixth Edition 53 Principles and Learning Objectives The primary emphasis of systems implementation is to make sure that the right information is delivered to the right person in the right format at the right time. –State the purpose of systems implementation and discuss the various activities associated with this phase of systems development. –List the advantages and disadvantages of purchasing versus developing software. –Discuss the software development process and some of the tools used in this process, including object-oriented program development tools.

54. Principles of Information Systems, Sixth Edition 54 Principles and Learning Objectives Maintenance and review add to the useful life of a system but can consume large amounts of resources. These activities can benefit from the same rigorous methods and project management techniques applied to systems development. –State the importance of systems and software maintenance and discuss the activities involved. –Describe the systems review process.

55. Principles of Information Systems, Sixth Edition 55 End of Chapter 13