5. The system of claim 4 further comprising a view generator communicating with the schema-to-ontology generator, wherein the view generator generates a database view of the plurality of inter-related data sources, using the federated schema, wherein the database view is formulated in terms of nomenclature of the common ontology model, and wherein said query generator generates the query for the database view.
8. The system of claim 5 wherein said view generator updates the database view when the common ontology model is changed.