|+49 7071 29-75993|
|+49 7071 29-5958|
|Universität Tübingen, WSI|
|Lehrstuhl für Datenbanksysteme|
|— Germany —|
Hello, my name is Tobias. I'm a postdoc with the database systems department.
We focus on data provenance for SQL. Data provenance is information about the origin and processing history of data.
One field of application is query debugging. Let C be a questionable data item (e.g., a table cell) which has been produced by a SQL query. Using techniques of data provenance, we trace back which input tables, rows and cells have contributed to C in the first place.
Here in Tübingen, we have developed a 2-step approach to provenance analysis based on the separation of concerns principle. This approach isolates i) data values and ii) provenance information from each other. Hence, the provenance derivation carried out in step ii) does not bother with (ordinary) data. Step ii) can put its focus solely on the task of provenance derivation. Advantages are a bigger SQL dialect, more fine-grained data provenance and faster provenance evaluation.
Below, my publication list is provided. You may also have a look at our project page.
From 2019 until today I am funded by DFG research projects dedicated to data provenance.
From 2017 to 2018, I was funded by 1/2 of a Landesstelle and by other sources.
From 2013 to 2016 I was a member of the Wissenschaftscampus Tübingen; specifically, of the cluster called Peer Productivity in Web 2.0 Environments. Our cluster consisted of a mix of researchers from the fields of Computer Science, Psychology and Economics.
PhD Thesis, Universität Tübingen, 2020.
Proceedings of the 44th Int'l Conference on Very Large Databases. PVLDB 11(11), pages 1536–1549. Rio de Janeiro, Brazil, August 2018.
10th USENIX Workshop on Theory and Practise of Provenance (TaPP 2018), London, UK, July 2018.
Proceedings of the VLDB 2016 PhD Workshop, New Delhi, India, September 2016.
Proceedings of the 19th Int'l Conference on Extending Database Technology (EDBT 2016), Bordeaux, France, March 2016.
Proceedings of the 41st Int'l Conference on Very Large Databases (VLDB 2015), Kohala Coast, Hawaii, USA, August 2015.
Proceedings of the 27th GI-Workshop Grundlagen von Datenbanken, Gommern, Germany, May 26-29, 2015.