International Association of Engineers
To reduce complexity in software systems it is essential to minimize the functional dependencies in them. Functional dependency can be caused by the internal logic (model) of the system as well as the user interface. It is then vital to locate the source of the dependency, so that it can be removed. The authors' method \"Design Equations for Systems Analysis\", or DESA, offers an opportunity to accomplish this. It allows separate examination of the model and the user interface when evaluating functional dependencies.