BTW Logo

The conference on Database Systems for Business, Technology and Web (BTW) is the most important database conference in Germany. Since 1985 it serves as a central forum for scientific and industrial exchange, offers demo and student programs as well as tutorials and workshops on various current topics. The relevance of BTW and its development are described by T. Härder and E. Rahm in their article 30 Jahre "Datenbanksysteme für Business, Technologie und Web (2015) as well as A. Blaser in Die BTW im Wandel der Datenbank-Zeiten (1995).

A complete list of previous BTWs can be found on the webpages of the Gesellschaft für Informatik. The conference proceedings can be found at

Year: City: Organizers:
2019 Rostock Prof. Dr. Andreas Heuer, PD Dr.-Ing. Meike Klettke, Prof. Dr. Torsten Grust, Prof. Dr. Felix Naumann
2017 Stuttgart Prof. Dr. Bernhard Mitschang, Prof. Dr. Daniela Nicklas
2015 Hamburg Prof. Dr. Norbert Ritter, Prof. Dr. Thomas Seidl
2013 Magdeburg  Prof. Dr. Gunter Saake, Prof. Volker Markl
2011 Kaiserslautern Prof. Dr. Theo Härder, Prof. Bernhard Mitschang
2009 Münster Prof. Dr. Gottfried Vossen, Prof. Johann-Christoph Freytag (Ph.D.)
2007 Aachen Prof. Dr. Matthias Jarke, Prof. Dr. Thomas Seidl, Prof. Dr. Alfons Kemper 
2005 Karlsruhe Prof. Dr. Peter C. Lockemann, Prof. Dr. Wolffried Stucky, Prof. Dr. Gottfried Vossen
2003 Leipzig Prof. Dr. Erhard Rahm, Prof. Dr. Gerhard Weikum
2001 Oldenburg Prof. Dr. Hans-Jürgen Appelrath, Prof. Dr. Andreas Heuer
1999 Freiburg Prof. Dr. Georg Lausen, Prof. Dr. Alejandro Buchmann
1997 Ulm Prof. Dr. Peter Dadam, Prof. Dr. Klaus R. Dittrich
1995 Dresden Prof. Dr. Klaus Meyer-Wegener, Prof. Dr. Georg Lausen
1993 Braunschweig Prof. Dr. Hans-Dieter Ehrich, Prof. Dr. Wollfried Stucky
1991 Kaiserslautern Prof. Dr. Theo Härder, Prof. Dr. Hans-Jürgen Appelrath
1989 Zürich Prof. Dr. Carl A. Zehnder, Prof. Dr. Theo Härder
1987 Darmstadt Prof. Dr. Hans-Jörg Schek, Prof. Dr. Gunter Schlageter
1985 Karlsruhe Prof. Dr. Peter C. Lockemann, Prof. Dr. Wollfried Stucky

A central topic will not be present at this year's BTW conference Rather, the diversity of the "database world" is in the foreground. The focus is therefore on the topics:

  • Query processing and index structures
  • Implementation and architecture of database systems
  • Parallel and distributed data processing in database systems
  • Data management for scientific applications
  • Performance analyzes and benchmarks
  • Database systems and programming languages
  • Knowledge Management and Data Mining
  • Text mining and text analysis
  • Workflow systems
  • Data cleaning and data integration
  • Main memory databases
  • Privacy and security
  • Database systems for data streams, web and graph data
  • Big Data and NoSQL databases
  • Interactive data analysis and visualization
  • Data management in the cloud
  • Provenance management
  • Machine learning for and with databases


18. BTW 2019

  • Thorsten Papenbrock (Hasso Plattner Institute): Data Profiling – Effiziente Entdeckung Struktureller Abhängigkeiten
  • Ismail Oukid (TU Dresden): Architectural Principles for Database Systems on Storage-Class Memory
  • Caetano Sauer (TU Kaiserslautern): Modern techniques for transaction-oriented database recovery

17. BTW 2017

  • Viktor Leis (TU München): Query Processing and Optimization in Modern Database Systems

16. BTW 2015

  • Maximilian Dylla (Saarland University): Efficient Querying and Learning in Probabilistic and Temporal Databases
  • Ulrike Fischer (TU Dresden): Forecasting in Database Systems

15. BTW 2013

  • Stephan Günnemann (RWTH Aachen): Subspace Clustering for Complex Data

14. BTW 2011

  • Christian Mathis (TU Kaiserslautern): XML Query Processing in XTC

13. BTW 2009

  • Ira Assent (RWTH Aachen): Efficient Adaptive Retrieval and Mining in Large Multimedia Databases
  • Jürgen Krämer (University of Marburg): Continuous Queries over Data Streams - Semantics and Implemenation
  • Sebastian Michel (Saarland University): Top‐k Aggegation Queries in Large‐Scale Distributed Systems  

12. BTW 2007

  • Jens Teubner (TU München): Pathfinder: XQuery compilation techniques for relational database targets
  • Martin Theobald (Saarland University): TopX - efficient and versatile top-k query processing for text, semistructured, and structured data

11. BTW 2005

  • Arne Harren (University of Oldenburg): Temporale Datenintegration in Data-Warehouse-Systemen
  • Sergey Melnik (University of Leipzig): Generic Model Management – Concepts and Algorithms

10. BTW 2003

  • Reinhard Braumandl (University of Passau): Quality of Service and Optimization in Data Integration Systems
  • Jens Lechtenbörger (University of Münster): Data Warehouse Schema Design

09. BTW 2001

  • Achim Kraiss (Saarland University): Hierarchische Speicherverwaltung für Informationssysteme mit Tertiärspeicher
  • Frank Wietek (University of Oldenburg): Intelligente Analyse multidimensionaler Daten in einer visuellen Programmierumgebung und deren Anwendung in der Krebsepidemiologie