Wednesday, September 21, 2011

System Development Cycle

                      The system development life cycle is classically thought of as the set of activities that analysts, designers ans users carry out to develop and implement an information system. the system development life cycle consists of the following
  • Problem definition
  • System analysis
  • System design
  • Programming analysis 
  • Program preparation band Testing
  • Implementation, Evaluation and Maintenance.
Problem defination
             To create a new system of programms or to improve or modify an existing one people have to recognize that a problem or need exists at the very beginning. 
        This problem or need may result from changing operating conditions. Managers, employees of departments  affected by changing conditions, and data processing personnel often participate in requirement sessions until the problem has been defined and specified study goals have been outlined. These goals should then be put in writing and approved by all concerned . This step cannot be by passed. 
       In this session, the requesets are clarified and then technical feasibility, economic feasibility operational feasibility study  are made., After a project request is approved its cost priority completion time and personnel requirements are estimated and used to determine where to add it any existing project list. 

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