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ISYS Ch 9

Software Development Life Cycle
Planning, analysis, design, development, testing implementation, and maintenance
legacy system
an old system that is fast approaching or beyond the end of its useful life within an organization
conversion
the process of transferring information from a legacy system to a new system
software customization
modifies software to meet specific user or business requirements
Off-the-shelf application software
supports general business process and does not require any specific software customization to meet the organizations need
systems developments life cycle
the overall process for developing information systems, from planning and analysis through implementation and maintenance
Planning phase
establishes a high level plan of the intended project and determines project goals
change agent
a person or event that is the catalyst for implementing major changes for a system to meet business changes
Brainstorming
a technique for generating ideas by encouraging participants to offer as many ideas as possible in a short period without any analysis until all the ideas have been exhausted
Project Management Institute(PMI)
develops procedures and concepts necessary to support the profession of project management
project
temporary activity a company undertakes to create a unique product, service, or result
project management
the application of knowledge, skills, tools, and techniques to project activities to meet project requirements
project manager
individual who is an expert in project planning and management, defines and develops the project plan, and tracks the plan to ensure the project is completed on time and on budget
project scope
describes the business need and the justification, requirements, and current boundaries for the project
project plan
formal, approved document that manages and controls the entire project
Analysis Phase
the firm analyzes its end-user business requirements and refines project goals into defined functions and operations of the intended system
Business requirements
the specific business request the system must meet to be successful, so the analysis phase is critical because requirements drive the entire systems development effort
Requirements management
the process of managing changes to the business requirements throughout the project
requieremtns definition document
prioritizes all of the business requirements by order of importance to the company
Sign-off
the users actual signatures indicating they approve all of the business requires
Design Phase
establishes descriptions of the desired features and operations of the system, including screen layouts, business rules, process diagrams, psuedo code,and other documentation
Development phase
takes all the detailed design documents from the design phase and transforms them from the design phase and transforms them into the actual system
Software engineering
a desciplined approach for constructin information systems through the use of common methods, techniques, or tools
computer-aided software engineering(CASE)
tools which provide automated support for the development of the system
Control objects for information and related technology(COBIT)
a set of best practices that helps an organization to maximize the nevefits of an information system, while at the same time establishing appropriate controls to ensure minimum errors

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