“…SADT (Structured Analysis and Design Technique; Marca & McGowan, 1993) was chosen as an integrative modeling technique and SREM (Software Requirements Engineering Methodology; Alford, 1985) as a singular one (see Balzert, 1982, with respect to method types). RFA Nets (Role-Function-Activity Nets; Oberquelle, 1987) were a promising representative of net-based modeling techniques, which were used successfully to model work organizations. State of the art in object-oriented modeling is UML (Unified Modeling Language; Rational Software Company, 1997), which combines a variety of modeling techniques such as class diagrams and sequence diagrams.…”