Waterfall Model
The Waterfall Model is a traditional software development methodology that follows a linear and sequential approach. It consists of a series of well-defined phases, and each phase must be completed before moving on to the next one. The model is called "waterfall" because the progress flows in one direction, like a waterfall, and once a phase is completed, it is considered final.
The typical phases in the Waterfall Model are:
One of the advantages of the Waterfall Model is its simplicity and clarity. Each phase has specific deliverables and a review process, making it easier to manage and control. However, it has limitations, such as inflexibility to accommodate changes once the development process has started. If a requirement is modified after the project is underway, it can be challenging and costly to make adjustments.
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Example: Suppose a software development project involves creating a new e-commerce website. In the Waterfall Model:
While the Waterfall Model has been widely used in the past, many modern development methodologies, such as Agile, have gained popularity due to their flexibility and ability to adapt to changing requirements during the development process.