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Risk and control of Information Systems

Systems Development

3.1 Systems Development Life Cycle (SDLC)

 Planning Feasibility study including goal setting, timing, duration and
budget

 Analysis Definition of project goals and analysis of user needs

 Design Features of system described in detail including screen
layouts, process layouts, business rules and
documentation. A prototype may be built

 Development Conversion of the design into a physical system including
the acquisition and installation of the hardware and
software

 Implementation The real code is written. Staff training. Testing for errors,
bugs and inoperability (Quality assurance);

 Review User acceptance testing, maintenance, post-
implementation review

3.2 Systems development risks

 Fails to satisfy user’s real requirements: the system was specified incorrectly.

 Do not provide the data processing or information for which they were
designed, or to the quality expected.

 The system was therefore designed and programmed incorrectly.

 They cost much more to develop and run than expected.

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