S ystems D evelopment L ife C ycle SDLC Each phase has inputs and outputs

S ystems d evelopment l ife c ycle sdlc each phase

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S ystems D evelopment L ife C ycle (SDLC) Each phase has inputs and outputs (deliverables) The initial input is the idea for the system The final deliverable is the system itself The project moves systematically through each phase A key idea of the life cycle is gradual refinement The system exists in each stage --- in an unfinished form Each stage adds to the system --- this is gradual refinement
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ANYONE CAN INITIATE A SYSTEM DEVELOPMENT PROJECT VIA RFSS RFSS – Request for System Services
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PLANNING PHASE Steering committee —decision-making body for the company Annual (at least once a year) budget cycle reviews all RFSS Preliminary planning conducted Projects prioritized Need / Urgency Financial Return Portfolio perspective Resource availability Market window of opportunity
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PLANNING PHASE The planning phase for a project begins when the steering committee receives a project request Four major activities are performed: Review and approve the project requests Review and approve the project requests Prioritize the project requests Prioritize the project requests Allocate resources Allocate resources Form a project developmen t team Form a project developmen t team
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PROJECT MANAGEMENT Project management is the process of planning , scheduling , and then controlling the activities during system development To plan and schedule a project effi ciently, the Project Manager or leader identifi es: Project scope Project scope Required activities Required activities Time estimates for each activity Time estimates for each activity Cost estimates for each activity Cost estimates for each activity Order of activities Order of activities Activities that can take place at the same time Activities that can take place at the same time
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PLANNING PHASE OUTPUT Basically this is preliminary investigation Identify business value Develop general work plan, set next deliverable Establish Project Manager Staff the Project Key deliverables: System Request Building a house : establish need/desire for new house, scout location, determine budget constraints
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ANALYSIS/REQUIREMENTS PHASE The analysis phase consists of two major activities: Conduct a preliminary feasibility investigation Conduct a preliminary feasibility investigation Determines and defines the exact nature of the problem or improvement Interview the user who submitted the request Determine if request is feasible Determines and defines the exact nature of the problem or improvement Interview the user who submitted the request Determine if request is feasible Perform detailed analysis Perform detailed analysis Study how the current system works Determine the users’ wants, needs, and requirements Recommend a solution Known as logical design Study how the current system works Determine the users’ wants, needs, and requirements Recommend a solution Known as logical design
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IS IT REASONABLE TO DO THIS PROJECT?
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