A comprehensive framework for representing and using nonfunctional requirements during the development process is proposed. The framework consists of five basic components which provide the representation of nonfunctional requirements in terms of interrelated goals. Such goals can be refined through refinement methods and can be evaluated in order to determine the degree to which a set of nonfunctional requirements is supported by a particular design. Evidence for the power of the framework is provided through the study of accuracy and performance requirements for information systems.
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