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Lecture3010-2

Lecture3010-2 - ,I LECTURE2 [Prof Peter Khaiter 1...

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1 LECTURE 2: LECTURE 2: Approaches to System Development Approaches to System Development ITEC 3010 “Systems Analysis and Design, I” [ Prof. Peter Khaiter ]
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2 Lecture Outline Lecture Outline Systems Development Life Cycle Systems Development Life Cycle Phases and Activities in the SDLC  Phases and Activities in the SDLC  Variations of the SDLC models Variations of the SDLC models Selecting the appropriate model Selecting the appropriate model Methodologies  Methodologies  of the SDLC  of the SDLC  Traditional Approach to SDLC Traditional Approach to SDLC Information Engineering Approach to SDLC Information Engineering Approach to SDLC Object-Oriented Approach to SDLC Object-Oriented Approach to SDLC Rapid Application Development Rapid Application Development Current trends in the SDLC Current trends in the SDLC CASE Tools CASE Tools
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3 Systems Development Life Cycle Systems Development Life Cycle Systems development life cycle Systems development life cycle  (SDLC)   Provides  overall framework overall framework  for managing  systems development process Two main approaches to SDLC Predictive approach Predictive approach  – assumes project can be  planned out in advance Adaptive approach Adaptive approach  – more flexible, assumes  project cannot be planned out in advance All projects use some variation of SDLC
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4 Predictive vs. Adaptive Approach to the  Predictive vs. Adaptive Approach to the  SDLC SDLC
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5 Phases in SDLC Phases in SDLC Project planning Project planning  – initiate, ensure feasibility, plan  schedule, obtain approval for project Analysis Analysis  – understand business needs and  processing requirements Design Design  – define solution system based on  requirements and analysis decisions Implementation Implementation  – construct, test, train users, and  install new system Support Support  – keep system running and improve
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6 Systems Development Life Cycle Systems Development Life Cycle
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7 Systems Life Cycle Systems Life Cycle    
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8 Activities of Each SDLC Phase Activities of Each SDLC Phase Predictive or adaptive approach use  SDLC Activities of each “phase” are similar Phases are not always sequential Phases can overlap Activities across phases can be done  within an iteration
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9 Activities of Project Planning Activities of Project Planning Define business problem and scope Produce detailed project schedule  Confirm project feasibility  Economic, organizational, technical, resource, and  schedule Staff the project (resource management) S Launch project   official announcement
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10 Analysis Activities Analysis Activities
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