Relations entre bases de données et ontologies dans le cadre du web des données. (On the Relationships Between Databases and Ontologies in the Context of the Web of Data)

To Philippe Curé We achieve more than we know. We know more than we understand. We understand more than we can explain. Claude Bernard quoted by Daniel Crevier " The Tumultuous History of the Search for Artificial Intelligence, " 1993. Acknowledgments I would like to thank my parents my wife and children the members of the jury of this habilitation Jean-Paul Giroud for twelve years of a rich collaboration Robert Jeansoulin for opening doors to interesting projects Jean Fruitet, former colleague at the Université Marne la Vallée all colleagues at the Université Paris-Est Marne-la-Vallée all research project partners 4