Member, Review Board, Proceedings of the VLDB Endowment (2010-2012).
Member, Editorial Board, Knowledge and Information Systems (from 2010).
Steering Committee Member, LID (Logic in Databases) series of international workshops (from 2007).
Editor, special issue of Information and Computation consisting of selected TIME 2005 papers.
Associate Editor, ACM Transactions on Database Systems (2004-2011).
Member, Editorial Board, Journal of Applied Logic (from 2004).
Member, Board of Editors, Information Processing Letters (2002-2011).
Editor, ACM SIGMOD DiSC 2001.
Steering Committee Member, TIME series of international conferences (from 2001).