Waterfall Model

Waterfall Model

The waterfall Model is an engineering model designed to be applied to the development of software.The idea is the following: there are different stages to the development and the outputs of the First Stage "Flow" into the second stage and these outputs "flow" into the third stage and so on.there are Usually five stages in this model of software Development.

Stages of Water Fall Model

Requirement analyis and Planninng:- In This stage the requirements of the "To be developed Software" are established.These are usually the services it will provide,its constraints and Goalsof the Software.Once theae are Established they Have to be defined such a way that are usable in the next Stage.This Stage is often Preludes by a Feasibility or a Feasible study is included in this stage.the Feasibility study includes Questions like;Should we develop the Software,what are the alternatives? It could be called the conception of a software project and might be seen as the very begining of the life cycle.