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Systems Design, Implementation, Maintenance, and Review Security, Privacy, and Ethics

Systems Design, Implementation, Maintenance, and Review Security, Privacy, and Ethics. Chapters 13 & 14. Systems Design. Systems Design. “How will the information system do what it must do to obtain a solution to a problem?”. Logical Design. Describes what the system must do

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Systems Design, Implementation, Maintenance, and Review Security, Privacy, and Ethics

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  1. Systems Design, Implementation, Maintenance, and ReviewSecurity, Privacy, and Ethics Chapters 13 & 14

  2. Systems Design

  3. Systems Design • “How will the information system do what it must do to obtain a solution to a problem?” Principles of Information Systems, Fifth Edition

  4. Logical Design • Describes what the system must do • “Functional requirements” Principles of Information Systems, Fifth Edition

  5. Physical Design • Describes the technology and other components needed to complete the logical design Principles of Information Systems, Fifth Edition

  6. Hardware backup • Disaster recovery plans • Hot site • Cold site Principles of Information Systems, Fifth Edition

  7. Software & Database Backup • Selective backups • Incremental backups • Image log Principles of Information Systems, Fifth Edition

  8. Fig 13.3

  9. Fig 13.4

  10. Evaluation Techniques • Group consensus • Benchmark tests • Cost/benefit analysis • Point evaluation Principles of Information Systems, Fifth Edition

  11. Fig 13.6 Avoid “scope creep”

  12. Systems Implementation

  13. Systems Implementation • Includes hardware acquisition, user preparation, hiring and training of personnel, site and data preparation, installation, testing, start-up, and user acceptance. Principles of Information Systems, Fifth Edition

  14. Make or Buy Software? • Externally developed software • Lower cost • Lower risk • Ease of installation • Internally developed software • Why? Principles of Information Systems, Fifth Edition

  15. System Testing • Unit testing • System testing • Volume testing • Integration testing • Acceptance testing Principles of Information Systems, Fifth Edition

  16. Fig 13.15

  17. Systems Maintenance

  18. Systems Maintenance • Checking, changing, and enhancing the system to make it more useful in achieving user and organizational goals. Principles of Information Systems, Fifth Edition

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

  20. Types of maintenance • Slipstream upgrade • Patch • Release • Version Principles of Information Systems, Fifth Edition

  21. Fig 13.17

  22. Systems Review

  23. Final step in SDLC Compares results with objectives Problems & opportunities trigger new SDLC process May be event-driven Significant vs. Continuous and/or time-driven Systems Review Principles of Information Systems, Fifth Edition

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

  25. Computer Waste & Mistakes

  26. Computer Waste • Discard technology • Unused systems • Personal use of corporate time & technology Principles of Information Systems, Fifth Edition

  27. Computer Crime

  28. Computers as Tools to Commit Crime • Social engineering • Dumpster diving • Password sniffing • Help on the Web Principles of Information Systems, Fifth Edition

  29. Computers as Objects of Crime • Illegal access and use • Hackers vs. crackers • Script bunnies Principles of Information Systems, Fifth Edition

  30. Data Alteration & Destruction • Virus • Application virus • System virus • Macro virus • Worm • Logic bomb • Virus hoaxes Principles of Information Systems, Fifth Edition

  31. Computers as Objects of Crime • Information and equipment theft • Software & Internet piracy • Computer-related scams Principles of Information Systems, Fifth Edition

  32. The Work Environment

  33. Health Concerns • Repetitive stress injury (RSI) • Carpal tunnel syndrome (CTS) • Ergonomics Principles of Information Systems, Fifth Edition

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