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Lexikon


Waterfall Model


A ref="module.php?name=Lexikon&file=search&eid=1&query=software life-cycle">software life-cycle or ref="module.php?name=Lexikon&file=search&eid=1&query=product life-cycle">product life-cycle model, described by W. W. Royce in 1970, in which development is supposed to proceed linearly through the phases of ref="module.php?name=Lexikon&file=search&eid=1&query=requirements analysis">requirements analysis, design, implementation, testing (validation), integration and maintenance. The Waterfall Model is considered old-fashioned or simplistic by proponents of ref="module.php?name=Lexikon&file=search&eid=1&query=object-oriented design">object-oriented design which often uses the {spiral model} instead. Earlier phases are sometimes called "upstream" and later ones "downstream". Compare: ref="module.php?name=Lexikon&file=search&eid=1&query=iterative model">iterative model. [W. W. Royce, "Managing the Development of Large Software Systems", Proceedings of IEEE WESCON, August 1970]. (1997-11-23)

In addition suitable contents:
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ref="module.php?name=Lexikon&op=content&tid=13626">WE ]






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