Relevant information retrieval and discovery into an IS strongly influenced by its history, regrouping a great number of large databases, is a very difficult task. Nowadays, the semantic web and information integration technologies offer some techniques solutions for these problematic. Moving gradually, from simple data integration to an important integration of data, information and knowledge on the systems, is the goal of our study. To join users in our approach and proposals is the key to our success. So we studied different technologies and infrastructures responding to issues in data and information integration, and introduce an approach for the establishment of tools to discover dynamic knowledge within a company. A priori connector’s interoperability is the foundation of our approach.