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Water Fall Model: The waterfall model is a model for software development (a process for the creation of software), which develops regularly flowing downwards (like a waterfall).

The development runs through a number of phases, namely: definition study/analysis, basic design, technical design / detailed design, construction, testing, integration, management, and maintenance.

Previously, a large software development, especially large cluttered knitting. With the advent of this new method,
computer companies hoped to clarify their projects.

The waterfall model is derived from the traditional way of working on large construction projects in construction. The purpose of this way of working is that divides the project into phases.

You start with phase 1 and phase 2 to begin no earlier than when you have completed Phase 1. And when you’re in a phase of an error you must do to correct back to that stage and the subsequent steps again.

History of Water Fall Model The origin of the term “waterfall” is often said that Winston Royce introduced it in 1970, but Royce saw them more in the repeated approach to software development and even used the term
“waterfall”.

Royce described the waterfall model as a method he ventured even an invitation to failure occurred. In 1970 Royce was that the waterfall model should be seen as the first draft, he felt that the method has flaws.

He brought a document that examined how the initial concept of a recurrent method could be developed; this new model in each phase was between feedback to the previous stage, as we now see in many current methods.

Royce was just annoying for the initial focus method, the criticism he had on this method was largely ignored. Despite Royce’s intentions to the waterfall model into a repeat method (iterative model), the use of this method is still very popular, but opponents of the waterfall model see it as a naive and inappropriate method for use in the real world “.