Administration of research
- President of the BDA steering committee (2017-2020).
- Agence Nationale de la Recherche (ANR) Member of the Scientific Committee: Défi 7 Information and communication society, 2014-2015
- Inria International Affairs - Direction des Relations Internationales (DRI): scientific manager for the Latin America zone, since January 2014.
- Member of ACM SIGMOD steering committee, 2001-2004.
- Trustee of the VLDB Endowment, 1993-1997.
- Member of the ACI GRID scientific committee, Ministry of Research (2002-2004).
- Member of the ACI GRID scientific committee, Ministry of Research (2002-2004).
- Director of the GDR BD, Ministry of Research (1989-1993).
- President of the Database technical committee of AFCET (1989-1993).
Associate editor of international journals
- Distributed and Parallel Databases, Kluwer Academic Publishers (since 1998).
- The VLDB Journal, Springer (1998-2001, 2012-2015).
- Transactions on Database Systems, Association for Computing Machinery (1993-1998).
- Int. Journal on Intelligent and Cooperative Database Systems, World Scientific (1998-2002).
- Proceedings of the VLDB Endowment (2009-2012).
- Journal of Information and Data Management (2010-2016).
- Internet and Databases: Web Information Systems, Kluwer Academic Publishers (2002-2010).
- Information System Engineering, Hermes, 2000-2004.
- Network and Information Systems Journal, Hermes (Editor-in-Chief, 1997-2000).
General chair of international conferences
- LaDAS@VLDB workshop, Rio de Janeiro, 2018.
- Int. Conf. on Very Large Data Bases (VLDB), Lyon, 2009 (750 participants).
- Extending Database Technology (EDBT), Nantes, 2008 (350 participants).
- High-performance Data Management in GRIDs (HPDgrid), Rio de Janeiro, 2006 (50 participants).
- ACM-SIGMOD Int. Conf., Paris, 2004 (650 participants).
- International Workshop on Information Integration on the Web, Rio de Janeiro, 2001 (100 participants).
Program committees of international conferences
- ACM-SIGMOD Int. Conf.: 1986, 1988, 1990, 1991, 1995, 1997 (PC chair), 1998, 2001, 2004, 2007, 2008, 2011, 2014 (area chair).
- Int. Conf. on VLDB: 1982, 1988, 1989, 1993, 1994, 1995, 1998 (industrial program chair), 1999 (European PC chair), 2000, 2002, 2003 (industrial program), 2005, 2006, 2007, 2008, 2011, 2015 (sponsor co-chair), 2018 (sponsor co-chair).
- IEEE Int. Conf. on Data Engineering: 1986, 1987, 1988, 1989, 1992, 2003, 2007 (ind. Prog. Chair), 2011, 2014, 2015 (DESWeb), 2016 (area chair), 2018 (sponsor co-chair).
- Int. Conf. on Extending Data Base Technology: 1990, 1992, 1996, 2010.
- IEEE Int. Conf. on Distributed Computing Systems: 2007 (data management track chair).
- Euro-par: vice-president (2005), president (2006) of Distributed and Parallel Databases track.
- ADBIS East-European Conference on Advances in Databases and Information Systems 2015: P. Valduriez (PC chair).
- Int. Conf. on Web Information System Engineering (WISE), 2003.
- Int. Conf. on Distributed and Parallel Information Systems: 1991, 1993 (PC chair).
- Journées Bases de Données Avancées (BDA) : 1990 (PC chair), 1992 (conference chair), 1994, 2001, 2003, 2007, …
- HPC and Data Sciences meet Scientific Computing, CARLA Workshop, Porto Alegre, Brazil, 2022: co-chair