Managing performance requirements for information systems

Abstract

A major challenge,for injbrmation system development is to deal with performance requirements, an important class ofnonfunctional requirements (quality attributes, or NFRs). For example, a system should "authorise credit card sales quickly." Howevev, pe@rmancerequirements, like other NFRs (such as accuracy and security). are d$icult to handle, since they haveglobal impact on systems, and can co$ict with each other and with target alternatives.