Modeling Service Dependencies in Ad Hoc Collaborative Systems

Several service management tasks or activities benefit from - or are even impossible without - the knowledge about service dependencies. Ad hoc collaborative environments impose special problems to the dependency modeling. In this paper we analyze these problems and propose a modeling approach for specifying static and dynamical aspects of dependencies. Modeling is based on the standard Unified Modeling Language, UML. Besides the standard modeling constructs we use new tagged values too. Applicability of the modeling approach is tested on prototypical applications which are developed on top of the Anhinga infrastructure