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As a software engineer, many of us will encounter the word Waterfall Model. In Software Engineering, there a a lot of life cycle model that is being used. One One of the models is the Waterfall. Waterfall Model is the most basic Life-Cycle model. It is developed by Winston Royce in the early 1970. Waterfall model describe that in software development can be thought as a simple sequence of phases. Each phase has a set of well defined goals and activities. The important contribution of the waterfall model is for management. It enables management to track development progress.

In a waterfall model, each phase must be completed in its entirety before the next phase can begin. At the end of each phase, a review takes place to determine if the project is on the right path and whether or not to continue or discard the project. The phases do not overlap in a waterfall model.

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