UServ Case Study, Conceptual Design with ARD+ Method

The paper is dedicated to an analysis of the classic business rules study called UServ. The importance of this study comes from the fact, that it serves as a benchmark example for a number of design and implementation methods for rules. In this paper, the analysis is conducted from the knowledge engineering point of view. The results of the analysis are also used to present the design of UServ using ARD+, a design method developed within the HeKatE project. The project provides a unified hierarchical design solution, that does not suffer from the well-known semantic gaps. In the paper the design gap is exposed; it is due to the lack of integration of the original SBVR, BPMN and rule methods used in the study