BU486 Chapter Notes - Chapter 20: Physical Model, Capital Budgeting, Payback Period
Document Summary
Bu486 chapter 20 notes: a five step process used to design and implement a new system. Systems analysis: first sdlc step where the information needed to purchase, develop, or modify a system is gathered. Conceptual design: second sdlc step where analysis decide how to meet user needs, identify and evaluate design alternatives and develop detailed specifications for what the system is to accomplish and how it is to be controlled. Physical design: third sdlc step where broad, user oriented conceptual design requirements are translated into the detailed specifications used to code and test software, design input/output, create files/databases, develop procedures and implement controls. Implementation and conversion: fourth sdlc step where the company hires and trains employees, tests and modifies procedures, establishes standards and controls, completes documentation, moves to the new system and detects and corrects design deficiencies. Operations and maintenance: fifth sdlc step where the system is periodically reviewed and necessary modifications and improvements are made.
