CHAPTER 1 Flashcards
Information systems analysis and design
The process of developing and
maintaining an information
system.
Application software
Software designed to process data and support users in an organization. Examples include spreadsheets, word processors, and database management systems.
System
A group of interrelated procedures used for a business function, with an identifiable boundary, working together for some purpose.
Component
An irreducible part or
aggregation of parts that makes
up a system; also called
a subsystem.
Interrelated
Dependence of one part of the
system on one or more other
system parts.
Boundary
The line that marks the inside
and outside of a system and that
sets off the system from its
environment.
Purpose
The overall goal or function
of a system.
Environment
Everything external to a system
that interacts with the system.
Interface
Point of contact where a system
meets its environment or where
subsystems meet each other.
Constraint
A limit to what a system can
accomplish.
Decomposition
The process of breaking the description of a system down into small components; also known as functional decomposition.
Modularity
Dividing a system up into chunks
or modules of a relatively
uniform size.
Coupling
The extent to which subsystems
depend on each other.
Cohesion
The extent to which a system or
subsystem performs a single
function.
Systems analyst
The organizational role most
responsible for the analysis and
design of information systems.