Waterfall Software Development Life Cycle. The waterfall model is the first phase of the sdlc phase, it is the first model widely used in the software industry and is divided into phases, the. It follows a vertical sequential path, where the next phase of the development only begins once the previous phase is complete.
For example, a design defect might go. The simplest software development life cycle model is the waterfall model, which states that the phases are organized in a linear order. The classical waterfall model is idealistic and assumes that no defect is introduced during any development activity.
