Chapter 1 Flashcards
Agile Method
Systems development method that attempts to develop a system incrementally, by building a series of prototypes and constantly adjusting them to user requirements. Related to adaptive method.
Business Process
A description of specific events, tasks, and desired results.
Deliverable
A polished, final product, suitable for its intended use. End products or deliverables often coincide with the completion of each SDLC phase.
Electronic Data Interchange (EDI)
A process that involves the computer-to-computer transfer of data between companies.
horizontal system
A basic system, such as an inventory or payroll package that is commonly used by a variety of companies.
vertical system
Application that provides employees of all levels a wide array of tools to improve job performance. Examples include email, word processing, graphics, and company intranets
Information Technology
A combination of hardware, software, and telecommunications sys-tems that support business operations, improve productivity, and help managers make decisions
Legacy system
An older system that is typically less technologically advanced than currently available systems
mission critical system
A system is a set of related components that produces specific results. An information system that is vital to a company’s operations
Object Oriented Analysis
The act of understanding an information system by identifying things called objects. An object represents a real person, place, event, or transaction. Object-oriented analy-sis is a popular approach that sees a system from the viewpoint of the objects themselves as they function and interact with the system
Preliminary Investigation
An initial analysis to clearly identify the nature and scope of the business opportunity or problem. Also called a feasibility study.
Scalable
The ability of a system to expand to meet new business requirements and volumes
Stakeholder
Anyone who is affected by the company’s performance, such as customers, employees, sup-pliers, stockholders, and members of the community.
Strategic Plan
The long-range plan that defines the corporate mission and goals. Typically defined by top management, with input from all levels.
Systems Development Life Cycle
Activities and functions that systems developers typically per-form, regardless of how those activities and functions fit into a particular methodology. The SDLC model includes five phases: 1. Systems planning, 2. Systems analysis, 3. Systems design, 4. Systems implementation, and 5. Systems support and security.
System Planning Phase
The first phase of the SDLC. During this phase the systems project gets started.The project proposal is evaluated to determine its feasibility. The project management plan is formu-lated, with the help of CASE tools where appropriate.
Systems Analysis Phase
The second SDLC phase. The purpose of this phase is to build a logical model of the new system
System Design Phase
The third SDLC phase. The purpose of systems design is to create a blueprint for the new system that will satisfy all documented requirements, whether the system is being developed in-house or purchased as a package
Systems Implementation Phase
The fourth phase of SDLC. During this phase the new system is con-structed, programs are written, tested, and documented, and the system is installed
Systems Support and Security Phase
During the systems support and security phase of the SDLC, the IT staff maintains, enhances, and protects the system
