Overview
PREview focuses on viewpoints for requirements engineering of computer-based systems but the viewpoint-concept is also used in various other areas of expertise. In communications, the ODP (Open Distributed Processing) Reference Model defines viewpoints from which a system can be specified. In CSCW viewpoints are also used to structure organisational analyses. However, these have not adapted the explicit notion of a viewpoint, but use it as a general multiple perspective approach to analysis.
The CORE method developed by Mullery was the first method to use viewpoints as an explicit notion. Nuseibeh and Greenspan have developed similar methods, in which viewpoints are a central notion.
PREview is a pragmatic adaptation of these older methods. The traditional viewpoint-oriented approaches are quite inflexible, which makes it hard to introduce these methods into existing businesses. PREview is not prescriptive about the methods and notations to be used, thereby making it easier to be integrated into existing requirements methods.
PREview aims to improve the quality of requirements specification by providing a framework for the early phases of the requirements process.
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