Welcome!

My professional interests include a variety of aspects of data management. Since the late 80's, much of my research has been concerned with aspects of temporal, spatial, and spatiotemporal databases, including data modeling, database design, data models and query languages, efficient query processing, and systems architectures. In recent years, my research has also covered aspects of data management for mobile computing and services.

I am in charge of building up a group in database management and data-intensive systems in the Department of Computer Science, which is part of the Faculty of Science, one of Aarhus University's faculties.

During the late 1980s and the 1990s, I was at the computer science departments at University of Arizona and University of Maryland for a total of about five years. From September 2008 to August 2009, I was a Visiting Scientist at Google, Mountain View, working in the structured data research group headed by Alon Halevy. August 2010, I moved to Aarhus University after having been at Aalborg University since 1990.

I am an ACM Fellow (for contributions to temporal and spatio-temporal data management), an IEEE Fellow (for contributions to temporal, spatio-temporal, and mobile data management), a member the Royal Danish Academy of Sciences and Letters, and a member of the Danish Academy of Technical Sciences.

I am an Editor in Chief of the VLDB Journal, and I serve as Vice Chair for ACM SIGMOD.