Towards a dynamic mapping in P2P mediation system

The data sources integration, disseminated on a network is a major preoccupation in many sectors. Problems due to share and to integrate information Interests a lot of researcher´s communities since last years. Works were carried to develop tools and techniques for transparent access to data sources available in a network. In this context, two types of integration systems are distinguished: the virtual integration based on mediation systems and the integration based on Peer to Peer systems (P2P). In this paper, we are interested to the correspondence discovery problem, or Mappings, between global schema in a third type of architecture such as the mediation systems based on P2P architecture.