Humboldt-Universität zu Berlin - Mathematisch-Naturwissenschaftliche Fakultät - Datenbanken und Informationssysteme

Prof. (emeritus) Johann-Christoph Freytag, Ph.D.

csm_Freytag2_4d36b6bc96.jpg

Adresse: Institut für Informatik
Humboldt-Universität zu Berlin
Unter den Linden 6
D-10099 Berlin
Sitz: Rudower Chaussee 25
D-12489 Berlin
Raum: 4.215
Telefon: +49 30 2093-3009
Fax: +49 30 2093-3010
EMail: freytag[at]dbis.informatik.hu-berlin.de

Research

Query optimization and query processing in object-relational DBMSs (ORDBMSs)

Privacy support in database systems and information systems

Data quality in databases

Semantic Web and database systems

Databases and Cloud Computing

Applications using DBMS technology such as Bioinformatics

Current Ph.D. students (as of December 2021)

  • Mathias Peters (topic: parallel processing of event patterns)
  • Saliha Irem Besik (topic: privacy aware workflows)
  • Nicolas Miranda (topic: event processing in astrophysics): Ph.D. student of the Research School HEIBRiDS at ECDF
  • Gregor Pfalz (AWI, Potsdam): Ph.D. student of the Research School HEIBRiDS at ECDF, co-advisor
  • Tabea Rettelbach (AWI, Potsdam): Ph.D. student of the Research School HEIBRiDS at ECDF, co-advisor

Professional Activities

VLDB: 1995, 1998, 2001, 2002, 2004, 2005, 2006, 2007, 2008,2009, 2010, 2011, 2012, 2018 (Area Chair)
SIGMOD: 1994, 2001 (industrial track), 2005, 2007, 2008, 2011, 2014, 2020
IEEE ICDE: 1995, 1997 (vice-chair), 2001, 2002, 2003, 2005, 2007, 2011, 2013, 2014, 2016 (area chair)
Comad: 1994, 2000, 2002
SSDBM: 2000, 2001, 2002
EDBT: 1990, 2006, 2008, 2015, 2021
BTW: 1997, 2005, 2007, 2013, 2019, 2021

Various national and international workshops

  • Reviewer for various journals including ACM TODS, ACM JACM, PVLDB and the VLDB Journal
  • Reviewer for the Deutsche Forschungsgemeinschaft (DFG), EU (various programs)
  • Head ("Sprecher") of the GI-Fachbereich Datenbanken und Informationssysteme (Gesellschaft für Informatik - German interest group in computer science) in Germany (2007 - 2015)
  • Member of the editorial board of the Journal Datenbankspektrum published by d-punkt Verlag
  • Member of the Editorial Board for the Springer Book Series on Data-centric Systems and Applications
  • Visiting Scientist at IBM Silicon Valley Laboratory, San Jose, CA, Summer 2001
  • Visiting Scientist at IBM Almaden Research Center, San Jose, CA, Winter 1997/1998
  • Visiting Scientist at Microsoft Research, Redmond, Washington, February/March 2002
  • Visiting Scientist at Microsoft Research, Redmond, Washington, February-May 2005
  • Visiting Scientist at Microsoft Research, Redmond, Washington, February-April 2007
  • Visiting Scientist at Microsoft SQL Server Development Group, Redmond, Washington, February-April 2008
  • Visiting Faculty at Harvard University, MA, February-April 2009
  • Visiting Faculty at UC Irvine, Computer Science Department (2017)
  • Co-Organizer of the GI-Workshop " E-Commerce: System Support Dealing with Data and Processes in Distributed Application Environments" at the annual GI-conference 2001 in Vienna
  • Organizer of the Workshop on Databases and Data Integration in Genome Research, February 2002 (supported by IBM)
  • Organizer of the following Dagstuhl Workshops:
Query Processing in Object-Oriented, Complex Object, and Nested Relation Databases (with D. Maier and G. Vossen), June 1991
Information and Process Integration: A Life Science Perspective (with R. Apweiler, T. Etzold, C. Goble, P. Schwarz),  January 2003
Perspectives Workshop: Data Mining: The Next Generation (together with R. Agrawal and R. Ramakrishnan), July 2004
Managing and Mining Genome Information: Frontiers in Bioinformatics (with J. Blazewicz and M. Vingron), November 2005
Federated Semantic Data Management (with Olaf Hartig, Univ. of Linköping and Maria-Esther Vidal, Universidad S. Bolivar Caracas, VE), June 2017

 

Research Participation

  • Co-initiator of the BMBF funded project GeoMultiSens
  • Co-initiator of the Forschergruppe Stratosphere funded by the DFG (2006 - 2014)
  • Board member and co-initiator of the Graduate School "METRIK" funded by the DFG (2006 -2014)
  • Board member and co-initiator of the Graduate School "SOAMED" funded by the DFG (2010 - 2019)
  • Co-initiator of the EU funde project "PRECIOSA" funded by the DFG (2010 -2012 )
  • Board member and co-initiator of the BMBF-funded project "INTERVAL" funded by the DFG (2003 - 2007)
  • Member of the Coordination Board for the "Berlin Center for Genome Based Bioinformatics" (BCB) (2000 - 2005)
  • Board member and co-initiator of the Graduate School "Distributed Information Systems" funded by the DFG (1997-2006)
  • Leader of the DFG funded project "Anfragebearbeitung und Optimierung für parallele relationale Datenbanksysteme" (1996 - 2005)

Awards

  • SUN-Grant recipient for research in Genomic databases, 1998
  • IBM-Faculty Award 1999 for excellent cooperation with IBM in the area of databases and workflow systems
  • IBM-Faculty Award 2001 for excellent cooperation with IBM in the area of databases and bioinformatics
  • IBM-SUR-Grant Award 2001: Hardware grant for scalable Life Science solutions
  • IBM-Faculty Award 2002 for excellent cooperation with IBM in the area of databases and bioinformatics
  • HP Labs Innovation Research Awards 2009 for research on DBMS and Cloud computing

Miscellaneous

Helpful links how to publish and how to perform research successfully

Book by D. Maier: Theory of Relational Databases

Book by Philip A. Bernstein, Vassos Hadzilacos, and Nathan Goodman: Concurrency Control and Recovery In Database Systems

Publications

List of publications: please access the DBLP Bibliography Server