Waterfall Model
The waterfall model is a software development model first proposed in 1970 by W. W. Royce, in which development proceeds linearly through the phases of requirements analysis, design, implementation, testing (validation), integration and maintenance.
In practice, the process rarely proceeds in a purely linear fashion. Iterations, by going back to or adapting results of the precedent stage, are common.
The Waterfall model is considered to be discredited for use as a Real World process by many modern software engineers, who are often proponents of agile processes instead.
In the original article, Royce advocated using the model repeatedly, in a iterative way. However, most people do not know that.
See also: Project lifecycle, Spiral model, Chaos model.
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This article (or an earlier version of it) contains material from FOLDOC's article on Waterfall Model, used with permission.
Referenced By
Project lifecycle
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