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What is the stages of systems development life cycle.

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i) Feasibility Study.

  • Describes the scope of the new system.
  • Provides estimates of costs timescales and benefits of new system.
  • The feasibility report produced forms the basis of the decision whether more detailed work will commence.

ii) Requirements Analysis.

  • Produces detailed information on what the users want the system to do.

iii) Systems Analysis.

  • Produces an accurate record of what the current system can do.

iv) System Specification.

  • Involves the production of a complete written/drawn statement of what the new system is required to do.
  • Should be comprehensible to user and designer.
  • Should not include detail of how the system should be implemented.

v) System Design.

  • Considers how the work should be carried out.
  • Will identify one or more system that can be implemented.

vi) System Development.

  • Either in-house programming or the selection and installation of of-the-shelf packages.
  • Also includes the production of user procedures.

vii) Testing.

  • Should be an ongoing process throughout the lifecycle.
  • Also a specific stage after System Development to test new system meets specification.

viii) Implementation.

  • System becomes live after adequate testing.

ix) Maintenance.

  • When a system is implemented it is likely that errors will be detected that were.missed in testing. These errors must be corrected.
  • It is possible that there may have been a fundamental misunderstanding between users and systems analysis/development staff that requires major systems rework.

x) Review.

  • Carried out after system has had sufficient time as part of normal procedures.
  • Covers costs, ease of use, meeting operational requirements.
  • Report should be produced giving recommendations for improvements to the system.Senior management will review recommendations and a new systems development life cycle may begin.
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