Towards a fuzzy mapping for mediation systems

Data integration involves combining data residing at different sources, and providing to the user a unified and global view of this data. The problem of designing data integration systems is important in current applications of real world, especially for mapping between attributes of global schema and those of local schemas of sources. The question is how to link the global schema and the set of local schemas of sources. In this paper, we focus on studying the mapping approaches, more precisely the Global As View GAV approach (GAV) for schemas mapping. Also, we present a new approach of mapping for mediation systems, based on fuzzy logic. This new approach enjoys the benefits and advantages of fuzzy sets theory.