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Life cycle of an information system. - the questions

  1. Explain the purpose of a feasibility study. Include in your answer the areas that should be considered. (5)
  2. Draw a diagram to illustrate the main phases of the traditional system life-cycle. (5)
  3. Describe the advantages of using prototyping in systems design. (6)
  4. The management of a company wishes to introduce a computerised diary and scheduling package that is known to be compatible with the existing software base. With the aid of examples, give three factors that could influence the success or failure of this exercise. (6)
  5. Give, with justification, a suitable method of changeover for the following:
    • a new electronic data entry system for a chain of retail clothing shops
    • a computer controlled traffic light management system
    • a computerised loans system for a college library to replace the current card based manual system
    • an on line seat booking system for a cinema, allowing seats to be booked from a number of outlets.
    • an electronic time keeping system in a manufacturing company with ten factories throughout the UK.
    • a networked shared diary system for a large business. (6)
  6. Describe three types of maintenance that might be made to a system. Illustrate your answer with examples relating to:
    • a payroll system
    • a stock control system (9)
  7. A systems analyst has been employed to produce a computer based system to replace the current manual one in a lending library. Describe three methods of investigating the current system; for each method explain what information the analyst would expect to gather. (9)
   

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