Design principles for secure integration of information

The purpose of this paper is to twofold. Firstly, we will show how various conflicts which may arise in a mediated system can be handled by means of annotated constraint logic. Secondly, we will briefly discuss some security related issues in a mediator architecture and possible solutions which can be implemented within our system

An executable graphical representation of mediatory information systems

In this paper we present an approach towards a unified modeling and query-processing tool for mediatory information systems. Based upon Coloured Petri-nets we are able to model the integration of parametric data (external, uncertain and temporal informations) and visualize the dataflow in mediatory information systems