Objektorientierte Systemanalyse und Prototyping

The article has three goals: 1. To emphasize system construction as the decision with most consequences in software development and to show solutions; 2. to demonstrate the all over applicability of object oriented techniques; 3. to underline the necessity of a unique view of software and data engineering and to emphasize, that a change of paradigms in software engineering is overdue. The most important statements: Systems have to be constructed, they don´t “fall from heaven”. A top down design of software systems is impossible: hierarchies of data (inheritance!) grow bottom up by abstraction. Transformation oriented methods (SA. SADT, RSL, ISAC etc.) are too expensive and cause breaks in structures : therefore they have to be “garbaged” from teaching and application.