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The systems development environment
Terms in this set (28)
Information systems analysis and design
The process of developing and maintaining an information system.
Software designed to process data and support users in an organization. Examples include spreadsheets, word processors, and database management systems.
A group of interrelated procedures used for a business function, with an identifiable boundary, working together for the same purpose.
An irreducible part or aggregation of parts that make up a system; Also called a subsystem.
Dependence of one part of the system on one or more other system parts.
The line that marks the inside and outside of a system and that sets off the system from its environment.
The overall goal or function of a system.
Everything external to a system that interacts with the system.
Point of contact where a system meets its environment or where subsystems meet each other.
A limit to what a system can accomplish.
The process of breaking the description of a system down into small components; also known as functional decomposition.
Dividing a system up into chunks or modules of a relatively uniform size.
The extent to which subsystems depend on each other.
The extent to which a subsystem performs a single function.
The organizational role most responsible for the analysis and design of information systems.
Systems development methodology
A standard process followed in an organization to conduct all steps necessary to analyze, design, implement, and maintain information systems.
Systems development life cycle (SDLC)
The series of steps used to mark the phases of development for an information system.
Systems planning and selection
The first phase of the SDLC, in which an organization's total information system needs are analyzed and arranged, and in which a potential information systems project is identified and an argument for continuing or not continuing with the project is presented.
Phase of the SDLC in which the current system is studied and alternative replacement systems are proposed.
Phase of the SDLC in which the system chosen for development in systems analysis is first described independently of any computer platform (logical design), and is then transformed into technology specific details (physical design) from which all programming and system construction can be accomplished.
Systems implementation and operation
Final phase of the SDLC, in which the information system is coded, tested, and installed in the organization, and in which the information system is systematically repaired and improved.
Building a scaled-down version of the desired information system.
Computer-aided software engineering (CASE)
Software tools that provide automated support for some portion of the systems development process.
A centralized database that contains all diagrams, forms, and report definitions, data structures, data definitions, process flows and logic, and definitions of other organizational and system components; it provides a set of mechanisms and structures to achieve seamless data-to-tool and data-to-data integration.
Joint application design (JAD)
A structured process in which users, managers, and analysts work together for several days in a series of intensive meetings to specify or review system requirements.
Rapid application development (RAD)
Systems development methodology created to radically decrease the time needed to design and implement information systems.
Participatory design (PD)
A systems development approach that originated in northern Europe, in which users and the improvement of their work lives are the central focus.
A family of development methodologies characterized by short iterative cycles and extensive testing; active involvement of users for establishing, prioritizing, and verifying requirements; and a focus on small teams of talented, experienced programmers.
THIS SET IS OFTEN IN FOLDERS WITH...
Systems Analysis Chapter 3
Chapter 2 - The sources of software
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