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Hello everyone,Once upon a time, software development consisted of a programmer writingcode to solve a problem or automate a procedure. Now a days, systems are so bigand complex that teams of architects, analysts, programmers, testers and usersmust work together to create the millions of lines of custom-written code that driveour enterprises.To manage this, a number of system development life cycle (SDLC) modelshave been created: waterfall, fountain, spiral build and fix, rapid prototyping,incremental, and synchronize and stabilize. The best known, is the waterfall: Asequence of stages in which the output of each stage becomes the input for thenext. These stages can be characterized and divided up in different ways, includingthe following:Project planning, feasibility study.