Constraint Acquisition - You can Chase but you cannot find, 5th Asia-Pacific Conference on Conceptual Modelling (APCCM), Wollongong, Australia, 24.01.2008 (Slides pdf-file)

Lossless Decompositions in Complex-valued Databases, 5th International Symposium on Foundations of Information and Knowledge Systems (FoIKS), Pisa, Italy, 12.02.2008 (Slides by H. Köhler pdf-file)

Appropriate Reasoning about Data Dependencies in Fixed and Undetermined Universes, 5th International Symposium on Foundations of Information and Knowledge Systems (FoIKS), Pisa, Italy, 13.02.2008 (Slides pdf-file)

Boolean Constraints for XML Modeling, 18th European-Japanese Conference on Information Modelling and Knowledge Bases, Tsukuba, Japan, 03.06.2008 (Slides pdf-file)

Cardinality Constraints for XML, Graduate School of Informatics, Kyoto University, Japan, 09.06.2008