| Preface Luc Segoufin | ||
| Answering Non-Monotonic Queries in Relational Data Exchange | ||
| André Hernich | ||
| Composition with Target Constraints | ||
| Marcelo Arenas, Ronald Fagin and Alan Nash | ||
| The Complexity of Rooted Phylogeny Problems | ||
| Manuel Bodirsky and Jens K. Mueller | ||
| Alternating register automata on finite words and trees | ||
| Diego Figueira | ||