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:



Workshop: Big Data Management Systems in Business and Industrial Applications
Deadline: Nov. 6th, 2016

New project CloudDBGuard starts in October

The new project "CloudDBGuard: Implementing Cryptography-based Approaches to Secure Data Management in Cloud Databases" will be funded by DFG for 3 years.

Paper accepted at SECRYPT2016

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

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 (