Role-Based Modelling of Interactions in Database Applications

Modern information systems interact with a wide variety of users ranging from people with specific roles in business processes to end-users who access information in various ways and in different environments. Therefore, an application has to adhere to a well defined security policy on one hand and be highly adaptable to context on the other. We have extended the OM data model, with its rich support for role modelling, with concepts for modelling interactions between users and applications. In this paper, we show how the resulting interaction model can be used for role-based access control, as well as for modelling interactions in context-aware applications.