Professional Service
Academic Service
- Editor-in-Chief, VLDB Journal, 2016-2021
 - Acting Editor-in-Chief, VLDB Journal, 2015-2016
 - Associate Editor, VLDB Journal, 2009-2015
 - Associate Editor, IEEE TKDE, 2009-2013
 - PVLDB Advisory Committee, 2014-2018
 - ACM SIGMOD Executive Committee, 2014-2017
 - IEEE TKDE Executive Committee, 2016-2019
 - Program Committee (PC) Chair SIGMOD 2011
 - President of VLDB Endowment, 2009-2013
 - ACM Fellows Selection (Awards) Committee, 2010-2014 (chair 2013)
 - Royal Society of Canada Fellows Selection Committee, 2012-2014
 - Trustee of VLDB Endowment, 2004-2013
 - ICDE Workshop Chair, 2010
 - SIGMOD Corporate Sponsorship Chair, 2008-2009
 - CRA-W Board Member, 2002-2009
 - Program Committee Co-Chair VLDB, 2004 (with Donald Kossmann)