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Hypertext implications for CASE environments

The article discusses hypertext and its use in the development of CASE based information systems. Information systems development is a lengthy process, comprising various phases dealing with different development processes --- from systems analysis, to system characterization and design, and culminating in the setting up of the system and assimilation by users. This is called the information system life cycle. The technology which deals with computerization of the various phases of information systems development is called CASE, or Computer-Aided Software Engineering. The work of the planner and programmer is frequently conducted in different work environments according to the phases of the system life cycle. To date, no computerized interface exists between the various environments, so that, in effect, management of the development phases is partially manual.The aim of this article is to show that a hypertext approach can be used to deal with the current difficulties in CASE-based information systems development. The basic premise of this article is that the CASE system should be viewed as a database, over which an appropriate dynamic hypertext model can then be defined. This approach differs from all other CASE approaches, which view CASE solely as a tool or working environment.Hypertext was developed in recent years to cope with the growing need for computer-aided management of large databases (particularly text-based ones). Hypertext enables the building of a large database and creation of information nodes with links between them, which make it possible to manage and control the many elements dispersed through numerous environments. This article sets out to show that it is possible to harness hypertext to manage many CASE-based work environments, thereby creating a computerized tool which draws together different work environments and enables management and control of its various elements.