Systems Development Life Cycle: Feasibility Study and SWOT Analysis, Assignments of Software Engineering

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SDLC – SYSTEM

DEVELOPMENT

LIFE CYCLE

TOPICS COVERED

 SDLC

 Business Information Systems

 Preliminary Investigations

 SWOT Analysis

SYSTEMS DEVELOPMENT LIFE CYCLE

 Systems planning

Systems analysis

 Systems design

 Systems implementation

 Systems operation and support

 Waterfall model

 Interactive model

SYSTEMS DEVELOPMENT LIFE CYCLE

 Systems planning

 (^) Purpose – identify problem’s nature/scope  (^) Systems request – begins the process & describes desired changes/improvements  (^) Systems planning – includes preliminary investigation or feasibility study  (^) End product – preliminary investigation report SYSTEMS DEVELOPMENT LIFE CYCLE

 Systems analysis

 (^) Purpose is to learn exactly how the current system operates  (^) Fact-finding or requirements determination is used to define all functions of the current system SYSTEMS DEVELOPMENT LIFE CYCLE

 Systems design

 (^) Purpose is to satisfy all documented requirements  (^) Identify all outputs, inputs, files, manual procedures, & application programs  (^) Avoid misunderstanding through manager and user involvement  (^) End product is system design specification SYSTEMS DEVELOPMENT LIFE CYCLE

 Systems implementation

 (^) Construct/deliver information system  (^) Prepares functioning, documented system  (^) Write, test, document application programs  (^) User and manager approval obtained  (^) File conversion occurs  (^) Users, managers, IS staff trained to operate and support the system  (^) Post-implementation evaluation performed SYSTEMS DEVELOPMENT LIFE CYCLE

SDLC -

SYSTEMS

PLANNING

OBJECTIVES  (^) Describe the initial review of systems requests and the role of the systems review committee  (^) Describe the internal and external factors that affect information systems projects  (^) Define operational feasibility, technical feasibility, schedule feasibility and economic feasibility  (^) Describe the steps and end product of a preliminary investigation

INFORMATION SYSTEMS PROJECTS

 Starting point is a systems request

 (^) Main Reasons for Systems Projects  (^) Systems request  (^) Improved service  (^) Support for new products and services  (^) Better performance  (^) More information

INFORMATION SYSTEMS

PROJECTS

INFORMATION SYSTEMS

PROJECTS

 (^) Internal Factors  (^) Strategic plan  (^) Top managers  (^) User requests  (^) Information technology department  (^) Existing systems

INFORMATION SYSTEMS

PROJECTS

 (^) External Factors  (^) Technology  (^) Suppliers  (^) Customers  (^) Customer Relationship Management (CRM)  (^) Competitors  (^) Economy  (^) Government