Abstract
In order to be able to use the standardized multipurpose modeling language UML (Unified Modeling Language) for the integrated development of business and software systems based on OMG's business object technology, a specialized process model is needed to ensure purposeful and effective development activities. BOOSTER*Process, which is part of a project called BOOSTER (Business Object-Oriented Software Technology for Enterprise Reengineering), describes a multi-level software development process model which meets these requirements and especially emphasizes reuse aspects resulting from the component character of business objects. This paper presents the basic architecture of BOOSTER*Process, consisting of four main engineering levels and, in addition, picks out the business process modeling activities at the business engineering level as an example. It is shown how UML activity diagrams can be applied in this context, replacing independent process modeling notations.