• Composing Schema Mappings: An Overview, INFINT 2009 - Bertinoro Workshop on Data and Service Integration, Bertinoro, Italy, 2009.
• Foundations and Applications of Schema Mappings, Departmental Seminar Talk, Oxford University Computing Laboratory, and Stanford InfoSeminar Talk, Computer Science Department, Stanford University, 2009.
• Repair Checking in Inconsistent Databases: Algorithms and Complexity, Talk at the Information Systems Seminar, Oxford University Computing Laboratory, 2009.
• Answering Aggregate Queries in Data Exchange, Talk at the KRDB Research Center for Knowledge and Data, Free University of Bozen-Bolzano, 2008.
• Reflections on Finite Model Theory, Talk at the 2007 IEEE Symposium on Logic in Computer Science (LICS 2007).
• Inductive Definability & Finite Variable Logics: From Logic to Computer Science, Talk at the 2005 Panhellenic Logic Symposium, dedicated to Yiannis N. Moschovakis.
• Schema Mappings, Data Exchange, and Metadata Management, Talk at the 2005 ACM Symposium on Principles of Database Systems (PODS 2005).

Invited Tutorials & Short Courses

• Relational Databases, Logic, and Complexity, Short Cource at the 2009 GII Doctoral School on Advances in Databases , University of Calabria, Italy, 2009.
• Foundations and Applications of Schema Mappings, Tutorial at the Workshop on Logic and Algorithms - LAA '08, Edinburgh, UK, 2008.
• Logic and Constraint Satisfaction: An Introduction, Tutorial at the AIM Workshop on Applications of Universal Algebra and Logic to the Constraint Satisfaction Problem, American Institute of Mathematics, Palo Alto, California, 2008.
• Schema Mappings and Data Exchange, Short Course at DASI '06 - Bertinoro Ph.D. School on Data and Service Integration, University Residential Center of Bertinoro, Bertinoro, Italy, 2006.
• Constraint Satisfaction and Logic, Tutorial at the International Workshop on Mathematics of Constraint Satisfaction: Algebra, Logic, and Graph Theory, University of Oxford, 2006.

• Computer Science Workshops: Blurring the distinction between conferences and workshops, and duplicate-submission policies, Panel on Paper and Proposal Reviews: Is the Process Flawed?, 2008 CRA Snowbird Conference.
• How can academia and industry work together to address educational issues , Panel Presentation at the 2007 Google Education Summit.