Dominique Hausler

I am currently working as a PhD student in the DFG Project GraFlex (and started in the DFG Project: NoSQL Schema Evolution and Big Data Migration at Scale II). My work contains the analysis of graph databases, in particular evolution in graph databases. To do so, I am analyzing the evolution capabilities of graph databases and developed an evolution language on top of Cypher. Additionally, we analyze schema transformation to make the evolutionary process between two graph database versions explicit. The second topic focuses on the detection of intra- and inter-model linkages. The aim is to develop a system where relational and different NoSQL database stores with heterogeneous schemas can be accessed at once. To connect different data models, inclusion dependencies are used.

Hausler, Dominique

Wissenschaftliche Mitarbeiterin

E-mail address: dominique.hausler(at)informatik.uni-regensburg.de (opens your email program)
Tel: +49 941 943 68609 (starts a telephone call, if your device allows this)
Location: Bajuwarenstr. 4, BA 626
Important information: Sprechzeiten nach Vereinbarung per Email
Lehrstuhl für Data Engineering

Research Interests

Schema evolution and schema transformation in graph databases
Detection and comparison of heterogeneous structures in graph databases
Inter-Model Linkage: inclusion dependencies to join single stores

Invited Talkes

Schema Evolution and Transformation in Graph Databases on 09. December 2025 (online), Database Group of Angela Bonifati, Lyon 1 University, France
Panelist at the Early Career Workshop, BTW 2025, Bamberg, Germany

Scientific Services

Program Committee, Spring Symposium 2026, Regensburg, Germany
Poster Session Chair, Spring Symposium 2026, Regensburg, Germany
Session Chair at 36^th Workshop on Fundamentals of Databases, GvDB 2025, Regensburg, Germany

Publications

Dominique Hausler, Torben Eckwert, Meike Klettke, Michael Guckert, Gabriele Taentzer: EvolveGDB: Model-Driven Graph Schema Transformation. Accepted for: ICGT 2026.
Dominique Hausler, Meike Klettke: Heterogeneity Detection and Comparison for Cost-Aware Graph Schema Evolution and Transformation. TGD@EDBT/ICDE 2026. https://ceur-ws.org/Vol-4192/TGD-paper5.pdf
Dominique Hausler, André Conrad, Mike Sperling, Uta Störl, Meike Klettke: Discovering Inclusion Dependencies in a Multi-Model Scenario. ER 2025: 242-260. https://dx.doi.org/10.1007/978-3-032-08623-5_13
Dominique Hausler, Torben Eckwert, Meike Klettke, Michael Guckert, Gabriele Taentzer: Model-Driven Schema Transformation for Graph Databases. ER 2025: 320-338. https://dx.doi.org/10.1007/978-3-032-08623-5_17
Laura Waltersdorfer, Dominique Hausler, Tanja Auge: Provenance Question-based AI Transparency and Accountable AI Governance. ProvenanceWeek@SIGMOD 2025: 94. https://dl.acm.org/doi/10.1145/3736229.3736260
Laura Waltersdorfer, Dominique Hausler, Tanja Auge: Provenance Question-based AI Transparency and Accountable AI Governance. AIGov@AAAI 2025: 94-94. https://openreview.net/pdf?id=EFsyy6DqCM
Meike Klettke, Tanja Auge, Dominique Hausler, Jennifer Landes, Silviya Melzer, Mark Lucas Möller, Maximilian Plazotta: Der Lehrstuhl Data Engineering an der Universität Regensburg. Datenbank-Spektrum: 25(1): 51-56. https://link.springer.com/article/10.1007/s13222-025-00499-4
Dominique Hausler, Jennifer Landes, Meike Klettke: SeeME: A General, Reusable Graph Schema for Data Preprocessing of Eye-Tracking Data. DE4DS@BTW 2025: 219-233. https://dx.doi.org/10.18420/BTW2025-126.
Dominique Hausler, Meike Klettke: Nautilus: Implementation of an Evolution Approach for Graph Databases. MODELS (Companion) 2024: 11-15. https://dx.doi.org/10.1145/3652620.3687781
Dominique Hausler: Estimation, Impact and Visualization of Schema Evolution in Graph Databases. MODELS (Companion) 2024: 123-129. https://dx.doi.org/10.1145/3652620.3688196
Dominique Hausler, Meike Klettke, Uta Störl: A language for graph database evolution and its implementation in Neo4j. ER (Companion) 2023. https://ceur-ws.org/Vol-3618/forum_paper_8.pdf
Mark Lucas Möller, Dominique Hausler, Sebastian Strasser, Tanja Auge, Meike Klettke: Heterogeneity in NoSQL Databases - Challenges of Handling schema-less Data. LWDA (2023): 134-145. https://ceur-ws.org/Vol-3630/LWDA2023-paper12.pdf

Additional Publications

Graph Database Evolution

Geo-X: Conditional graph schema evolution language to handle heterogeneous data
Graph Evolution Operation (GEO) File: Domain-unspecific description of evolution operations for graph databases in general
Schema Modification Operation (SMO) File: An evolution language for the schema of graph databases to write schema modification operations. The language proclaimed here is domain-specific for the query language Cypher used in Neo4j
Nautilus - Evolution Tool for Graph Databases: Code is available on GitHub under https://github.com/DominiqueHausler/Nautilus-Graph-Schema-Evolution

In-Database Data Preprocessing

In-Graph-Database Implementation of a General, Reusable Graph Schema and a Modular Data Preprocessing Pipeline For Eye-Tracking Data

Teaching

Lectures and Seminars:

ONGOING

Exercise: Databases 1 (SS 25)

PAST

Exercise: Programming 1 (WS 24/25)
Integrated course (lecture + seminar): Data Engineering (SS 23)

Theses:

PAST

Bachelor's thesis: Schema mapping from Neo4j to ProSA (i.e., from graph to relational data)
Master's thesis: Methods for discovering explicit and implicit references in relational and non-relational database systems

Curriculum Vitae

Duration	Institution
since 04/2023	Research assistant in the DFG project: “GraFlex: Interactive Graph Database Evolution and Graph Data Transformation” (since 2025), in the DFG project: “No SQL Schema Evolution and Big Data Migraion at Scale II” (2023-2024), Faculty for Computer Science and Data Science, Data Engineering Group, University of Regensburg, Germany
2017-2021	Graduate student of Digital Humanities, University of Regensburg, Germany Master thesis: Empirical analysis of learning and teaching methods during the Corona Pandemic to develop orientation guidlines for students
2017-2021	Graduate student of Comparative East and Western European Studies, University of Regensburg, Germany Master thesis: Corpus-based analysis of learner texts by russian L1 speakers
2014-2018	Undergraduate student of General and Comparative Linguistics, Information Science and History, University of Regensburg, Germany Bachelor thesis: The expression of reflexive verbs: A empirical study among Ukrainians with German as a Second Language

Publications

To top