Quality of Data in mediation systems

Quality of Data (QoD) became a major concern which more and more considers necessary to evolve the satisfaction of final users. In this work, we are approaching a methodology which consists of classifying and listing factors impacting Data Quality in Data Integration Systems, and more literally these which influence mediation systems and which will constitute our long-term research axis. Moreover, we shall propose in this work a contribution in the form of an attempt to define main factors impacting Quality of Data.