Knowledge Engineering
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Institute of Computer Science
Georg-August-University Göttingen
Goldschmidtstraße 7
37077 Göttingen, Germany

Research Group for Knowledge Engineering

The research group Knowledge Engineering conducts research and development in the area of security and privacy in Cloud Computing and Service-Oriented Computing.
Another emphasis lies on technological foundations and applications of Not-Only-SQL (NOSQL) databases.
The research group also investigates topics at the intersection of databases (in particular, Cloud databases), artificial intelligence (using Semantic Web technology) and mathematical logic. A particular focus is given to intelligent security mechanisms for databases by combining logics and cryptography.

Lena Wiese:
Advanced Data Management for SQL, NoSQL, Cloud and Distributed Databases
DeGruyter/Oldenbourg, 2015
375 pages, 82 figures, 31 tables
ISBN 978-3-11-044140-6
e-ISBN (PDF) 978-3-11-044141-3
More information:


Paper accepted at SECRYPT2016

Tim Waage, Daniel Homann and Lena Wiese: Implementing order-preserving encryption schemes for Apache HBase and Apache Cassandra.

Talk at Distributed Matters!, Berlin
Dr. Wiese gave a talk on "Replication and Synchronization Algorithms for Distributed Databases" at Distributed Matters 2015 in Berlin.

2nd International Workshop on NoSQL Databases, Emerging Database Technologies and Applications
Submission of Full Papers: March 31st, 2015
The workshop will be held in conjunction with DEXA 2015 conference in Valencia, Spain. It will be a one-day workshop scheduled during the main conference, i.e. September 1 - 4, 2015.
More information:

Paper presentation at FPS2014
Tim Waage presented the paper Benchmarking encrypted data storage in HBase and Cassandra with YCSB at the 7th International Symposium on Foundations and Practice of Security in Montreal.

Open position
Studentische Hilfskraft (student assistant)

We are looking for a motivated student interested in working on the ambitious topic of implementing cryptographic tools for
distributed NoSQL databases (Cassandra, HBase, Hypertable, Accumulo). Appropriate working environment will be

In case of any enquiries please contact Dr. Wiese by email (