Simone Bova wins the ICDT 2017 best paper award

At ICDT 2017, the 20th International Conference on Database Theory, which will be held in Venice, Italy, March 21-24, 2017, our post-doc researcher Simone Bova will receive the best paper award for the paper:

Simone Bova and Hubie Chen.
How many variables are needed to express an existential positive query?