Requirements evolution in the midst of environmental change: a managed approach

Requirements evolve, not only during system development but also after a system has been installed. The aim of the work on the EVE (Evolution Engineering) project is to develop practical methods for dealing with requirements evolution. The paper presents the early output from our work-the EVE framework for requirements evolution. The EVE framework is comprised of two components: a meta model and an associated process model. The EVA meta model captures a set of modelling concepts in requirements evolution, including change, impact, risk and viewpoint. The EVA process model provides technologists with a framework for handling the emergence of new or changing requirements during the lifetime of a system. The paper illustrates the EVA framework on a simple example, and highlights the importance of social and environmental responsibility in requirements evolution