Program committees (selected)

VLDB: 2011, 2007, 2001, 1994.

SIGMOD: 2004.

PODS: 2008, 2005, 1995.

ICDT: 2013, 1995.

EDBT: 2008.

ICDE: 2007.

CIKM: 2013.

SUM: 2010-2015, 2007.

FOIKS: 2012, 2010.

TIME: 2010, 2009, 2006, 2005 (co-chair), 2001, 2000, 1999, 1998, 1996.

DBRank: 2007-2010.

POLICY: 2001-2004.

SSTD: 2003, 2001.