On Related Pragmatic Categories and Dependencies within Enterprise Modelling
Remigijus Gustas · 1995
Requirements modelling is a highly critical phase in the development of computerised information system. The consequences of errors are difficult to trace in the further development phases. Usually, the price paid for complex information system reengineering activities is relatively too big, compared to the cost of development the completely new version of it. A great variety of problems such as incompleteness, contradictions, ambiguities, over specifications arise during analysis of several specifications of the same information system. The starting point for information systems requirements modelling research are initial requirement statements. These statements express wishes of designers about what the system should do. Initial requirements are usually interpreted as objectives, opportunities and problems, and presented in the form of natural language text. As a matter of fact, these pragmatic representations are often contradictory, ambiguous, incomplete and inconsistent. The objective is to produce the description that it could be suitable for developers of technical system. A great variety of models and languages have been proposed to capture precise, unambiguous, complete and consistent requirements. This process is entitled 'from fuzzy to formal'[F3_94] and schematically could be represented by Fig.1.1.