Résumé
We propose to demonstrate InteGraal, a tool for reasoning over heterogeneous and federated data sources. InteGraal is a highly modular tool constituted by two main components. The first is the data-integration layer which allows the users to build a federated factbase over a collection of sources. The second is the automated reasoning layer, which provides powerful means for the declarative exploitation of data through the expressive formalism of existential rules. This demonstration proposes to showcase the use of the tool in use-cases of data exploitation as well as to present its architecture and its dedicated query answering mechanisms.