System Development

System Development - Systems Development Agenda Systems...

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Systems Development
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Agenda Systems Development Life Cycle (SDLC) Systems Development Planning Feasibility Analysis
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Systems Development Life Cycle (SDLC) Systems Development Life Cycle (SDLC) phases Systems analysis Conceptual design Physical design Implementation and conversion Operations and maintenance
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SDLC Each phase broken down into several steps or tasks Each step has: Start date End date Product (deliverable) Steps may be repeated
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Systems Development Life Cycle Systems Analysis Do initial investigation Do system survey Do feasibility study Determine information needs and system requirements Deliver systems requirements Feasibility analysis and decision points
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Feasibility Analysis Traditionally, done once at project beginning, then forgotten Should be redone after each SDLC stage SDLC costs increase exponentially through each succeeding phase Project uncertainty (# unknowns) decreases with each SDLC stage
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SDLC Costs and Unknowns TIME (SDLC Phases) Magnitude Project Costs Project Unknowns
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Feasibility Analysis Forget about sunk costs! they are the past So, at end of each SDLC phase conduct new feasibility analysis now fewer unknowns than before make decision of whether or not to proceed with SDLC
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Systems Development Life Cycle Feasibility analysis and decision points Conceptual Design Identify and evaluate design alternatives Develop design specifications Deliver conceptual design requirements
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Systems Development Life Cycle Feasibility analysis and decision points Physical Design Design output Design data base Design input Develop programs Develop procedures Design controls Deliver developed system
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Systems Development Life Cycle Feasibility analysis and decision points Implementation / Conversion Develop plan Install hardware and software Train personnel, test the system Complete documentation Convert from old to new system Fine-tune and review Deliver operational system
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Systems Development Life Cycle Operation and Maintenance Operate system Modify system Do ongoing maintenance Deliver improved system Systems Analysis
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Participants Management Accountants IT Steering Committee Project development team systems analysts and programmers External players customers vendors
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Accountants’ Roles Determine own information needs Members of project development team Play active role in designing system controls Help perform feasibility (ROI) analyses
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Steering Committee Set policies that govern AIS Ensure top-management participation Monitor and control Facilitate coordination and integration of IS activities At Intel, called Management Review Committees (MRC)
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Agenda Systems Development Life Cycle (SDLC) Systems Development Planning Feasibility Analysis
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Need for planning consistency
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This note was uploaded on 10/25/2011 for the course AIS 141 taught by Professor Yanxiong during the Fall '10 term at CSU Sacramento.

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System Development - Systems Development Agenda Systems...

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