UML-based Rule Modeling with Fujaba

In this paper we describe visual rule modeling tool Strelka, which is implemented as a Fujaba plugin. The modeling tool supports a UML-Based Rule Modeling Language (URML). It extends standard UML metamodel with a concept of a rule. We discuss an issue of a UML-based rule modeling, present rule metamodel, describe implementation of a Fujaba plugin and give examples of business rules, modeled using Strelka.