System Development Life Cycle Of Waterfall Model

This is the simplest and the most popular model of SDLC.In this model,the phases are organized in a linear order.This model is most suitable for routind type of jobs in which all the problems are already known.It generally has longer completion time because at the end of stes,at least dobument must be presented and analyzed.The activities and steps of this model are presented in the figure given below:
.Feasibility study
.Requirement Analysis and project planning
.System Design
.Detail Design
.Coding and Unit testing
.Systen and Integration testing