| Vol-79 © 2003 for the individual papers by the papers' authors. Copying permitted for private and scientific purposes. Re-publication of material on this page requires permission by the copyright owners.

# Proceedings of the

| # 10th International Workshop on Knowledge Representation meets Databases (KRDB2003)

Hamburg, Germany,
September 15-16, 2003

### Edited by:
Francois Bry, University of Munich, Germany (`Francois.Bry@informatik.uni-muenchen.de`)
Carsten Lutz, TU Dresden, Germany (`lutz@tcs.inf.tu-dresden.de`)
Ulrike Sattler, University of Manchester, UK (`sattler@cs.man.ac.uk`)
Mareike Schoop, RWTH Aachen, Germany (`schoop@informatik.rwth-aachen.de`)

KRDB2003 is an affiliate event with KI 2003 (26th German Conference on Artificial Intelligence) .

## Table of Contents

Title, Program Committee, and Table of Contents

### Invited talks

View-based Query Processing for Semistructured Data. Diego Calvanese

Geotemporal Reasoning for Semantic Web Applications. Hans-Jürgen Ohlbach

### Regular Papers

Anwering Recursive Queries under Keys and Foreign Keys is Undecidable. Diego Calvanese and Riccardo Rosati

Expressing Transactions with Savepoints as Non-Markovian Theories of Actions. Iluju Kiringa and Alfredo Gabaldon

Description Logic Systems with Concrete Domains: Applications for the Semantic Web. Volker Haarslev and Ralf Möller

Optimizing Query Answering in Description Logics using Disjunctive Deductive Databases. Boris Motik and Raphael Volz

Knowledge Representation using Schema Tuple Queries. Michael J. Minock

Focused Search on the Web using WeQueL. Amar-Djalil Mezaour

On a Unifying Framework for Comparing Knowledge Representation Schemes. Giorgos Flouris, Dimitris Plexousakis, and Grigoris Antoniou

A Framework for Answering Queries using Multiple Representation and Inference Techniques. Nicholas L. Cassimatis

Some Practical Issues in Building a Hybrid Deductive Geographic Information System with a DL Component. Michael Wessel

Analysis of Temporal Abstraction in Medical Databases. Mira Balaban, David Boaz, and Yuval Shahr

A Semantic Web based Identification Mechanism for Databases Cristian Perez de Laborda and Stefan Conrad

submitted to CEUR-WS by Ulrike Sattler, September 2, 2003