Systems Design Life Cycle Explained

Agile methodologies include 1 rad rapid application

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Agile Methodologies include: 1) RAD, Rapid Application Development, AKA Rapid Prototyping: emphasizes extensive user involvement in the rapid and evolutionary construction of working prototypes of a system, to accelerate the systems development process. Prototype is a smaller scale representation or working model of the users’ requirements or the proposed design for an IT system. 2) XP, Extreme Programming: breaks a project into four phases, and developers cannot continue to the next phase until the previous phase is complete. planning, designing, coding, and testing. (saves time and continuously review the needed requirements) 3) RUP, Rational Unified Process: provides a framework for breaking down the development of software into four “gates.” a) Inception: This phase ensures all stakeholders have a shared understanding of the proposed system and what it will do. b) Elaboration: This phase expands on the agreed-upon details of the system, including the ability to provide an architecture to support and build it. c) Construction: This phase includes building and developing the product. d) Transition: Primary questions answered in this phase address ownership of the system and training of key personnel. 4) Scrum: uses small teams to produce small pieces of software using a series of “sprints,” or 30- day intervals, to achieve an appointed goal.
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Reasons for Project Failure Unclear or Missing Business Requirements Skipping Phases Changing Technology Cost of finding and fixing errors Project Management Project Management Institute (PMI): develops procedures and concepts necessary to support the profession of project management. Project: temporary activity a company undertakes to create a unique product, service, or result. Project management: the application of knowledge, skills, tools, and techniques to project activities to meet project requirements. Project Manager: an individual who is an expert in project planning and management, defines and develops the project plan, and tracks the plan to ensure the project is completed on time and on budget. Project Deliverables: any measurable, tangible, verifiable outcome, result, or item that is produced to complete a project or part of a project.
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