| 1968 | graduated Williston Academy, Easthampton, Mass., USA |
| 1969 | graduated Theodor-Heuss-Gymnasium, Heilbronn, Germany |
| 1969-1974 |
student at Univ. of Karlsruhe, Germany, graduated July 1974 with a MBA in Industrial Engineering (OR/Computer Science) |
1974-1976 |
visiting Ph.D. student at the Dept. of Computer Science, The University
of British Columbia, Vancouver, B.C., Canada |
| 1977 | Ph.D. (Dr. rer. pol.) from Universität Karlsruhe, Germany; Title of thesis: "Analysis of two-level grammars", Referees: H. Maurer and Th. Ottmann |
| 1982 | Habilitation (inaugural dissertation) and venia legendi in Karlsruhe;
Thesis:
"The Linksort Family - Design and Analysis of Fast, Stable Quicksort Derivatives" Referees: Th. Ottmann, W. Janko, Jan van Leeuwen (Utrecht) |
| 1978-1984 | lectureships at universities of Würzburg, Kaiserslautern,
Turku (Finland), and Osnabrück; step-in professorships at Darmstadt (C3), Trier (C4) |
| 1984-1987 |
Assoc. Professor (C3) for Operating Systems and Computer Networks at the Univ. of Applied Sciences (FH) Fulda |
| 1987 | Research stay at the IBM Scientific Center in Heidelberg |
| 1985-89 | Offers for professorships as Assoc. Professor to the State Univ. of
Hawaii in Manoa, Assoc. Professor to the Universität Gh Osnabrück, and Full. Prof. (C4) to the Dept. of Electrical Engineering at the Universität Gh Siegen |
| 1987-1989 | Assoc. Professor (C3) for Computer Science at the Department of Mathematics and Computer Science of the Universität Gh Kassel |
| since 1989 | Full Professor (C4) in Computer Science (Praktische Informatik) at the Universität Gh Kassel, Head of Database Research Group |
| 1992 | sabbatical leave to the Dept. of Computer Science, The University
of Queensland, Brisbane, Australia |
| 1993-1994 | Head of Department Mathematics and Computer Science, Univ. Gh Kassel |
| 1995 | successful completion of a two-year R&D project with SAP AG |
| 1997 | research stay at Int. Computer Science Institute (ICSI) of the UC Berkeley |
| 2000 | research stay at Faculty of Information Technology and Distributed Systems
Technologies Centre, Monash University, Melbourne, Australia |
| 2001 | major contributor to initiative to start a computer science programm at the University of Kassel. Efforts result in three sponsored professorships. Studies start in Fall 2001 with 120 students. |
| 2002 | offer for Full Prof. at Free University of Bozen/Bolzano (Italy). Declined due to inability to carry over German pension plan claims within the EU |