SURVAY ON STAGES OF SYSTEM DEVELOPMENT LIFE CYCLE

Abstract

Systems have common life cycle. They are designed, they are introduced, they evolve, they decay, and they are replaced. In the system life cycle; there is a learning and adjustment period before it achieves optimum performance; it then operates efficiently for period; and then because of internal or external factors it begins to decay and will after a time be replaced, in parallel to the operation of the system the system development activities are carried out; the bulk of this in terms of time is devoted to maintaining the evolving system as changes are required; the smaller part in time is concerned with developing a new system to replace the one which is in decline. The system development activities which was described above can be broadly divided into system design and system maintenance, but we need the system design part into a number of stages concerned with feasibility, investigation and analysis, design,implementation and post audit. As the system life cycle proceed by 6 steps which are preliminary study, feasibility study, system analysis, system designing, system implementation and system maintains, of any error has been occurred, the system development can do by doing the procedure again from the step where error was occurred. As every step was reported on the system life cycle, the changes could be inspecting again if it is needed again.