System Development Life Cycle (SDLC)

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System Development Life Cycle (SDLC) Jason C. H. Chen, Ph.D. Professor of MIS School of Business Administration Gonzaga University Spokane, WA 99258 chen@gonzaga.edu

Systems Development Life Cycle (SDLC) Four Phases in SDLC Analysis Define (Plan) Requirements Analysis Design Logical Design (visual, conceptual) Physical Design Implementation Coding Testing Conversion Maintenance Hardware/Software People

Systems Development Life Cycle Systems Investigation (Definition) Product: Feasibility Study Understand the Business Problem or Opportunity Systems Analysis Product: Functional Requirements Develop an Information System Solution Systems Design Product: System Specifications Systems Implementation Product: Operational System The traditional information systems development cycle is based upon the stages in the systems approach to problem solving, where each step is interdependent on the previous step: Systems Investigation. This stage may begin with a formal information systems planning process to help sort out choices from many opportunities. Typically, due to the expense associated with information systems development this stage includes a cost/benefit analysis as part of a feasibility study. Systems Analysis. This stage includes an analysis of the information needs of end users, the organizational environment, and any system currently used to develop the functional requirements of a new system. Systems Design. This stage develops specifications for the hardware, software, people, network, and data resources of the system. The information products the system is expected to produce are also designated. Systems Implementation. Here the organization develops or acquires the hardware and software needed to implement the system design. Testing of the system and training of people to operate and use the system are also part of this stage. Finally, the organization converts to the new system. Systems Maintenance. In this stage, management uses a postimplementation review process to monitor, evaluate, and modify the system as needed. Implement the Information System Solution Systems Maintenance Product: Improved System 2000 McGraw-Hill Companies

Four Phases in the Systems Development Life Cycle (SDLC) (Waterfall) Analysis [1] [2] [3] [4]

Five Phases in the Systems Development Life Cycle (SDLC) (Waterfall)? Analysis [1] [2] [3] [4] [5] Figure 12-9 Five Phases of the Systems Development Life Cycle (SDLC)