The Waterfall Model
The Waterfall Model founded by Lockheed Martin software engineers
The waterfall model is a sequential software development process, in which the processes of the project are seen as streamlining steadily downward, as resembling a waterfall, through the phases of Conception, Initiation, Analysis, Design, Development, Testing and Deployment, Maintenance. To follow the waterfall model, one proceeds from one phase to the next in a purely sequential manner. In most instances, the stakeholder is secures jurisdiction of project plan and cost to the manangement team. The Project Manager then implements disciplines of planning, organizing, and managing resources to bring about prescriptive milestones followed by the completion requirements specification, which are set in stone. At the completion of the requirements, the Project level architecture is designed and a blueprint is drawn for developers or programmers to follow to implement the design based upon the requirements. When the design is fully completed, an implementation of that design is made by coders. Upon gaining traction of the implementation phase, new software components and reusable components are married and present new functionality and reduced program risk through software testing. The facilitation of software bugs and errors are empowered through unit test cases, manual testing and regression testing. Thus the waterfall model maintains that team members shall only move to a phase only when its preceding phase is completed and perfected.