Section: New Results

Distributed knowledge base.

Webdamlog The Webdamlog language is an extension of datalog to the distributed context, with delegation as the main novelty. A summary of the project was presented in [20] .

We introduced an access control mechanism based on provenance in [26] . This access control is designed for a distributed setting. Peers getting data are also willing to enforce access control on that data, so that the owner of the data keeps some control over it when the data is passed around in the network. A second version of Webdamlog was developed in 2015 at Drexel, primarily by Vera Moffit also as part of her thesis (in collaboration with S. Abiteboul). It includes access control mechanism.