| 2011 | WoWMoM | Privacy-by-design in ITS applications. | Antonio Kung, Johann Christoph Freytag, Frank Kargl |
| 2009 | GI | Protecting Privacy in Context-aware Systems - Necessary or superfluous? | Johann Christoph Freytag |
| 2009 | GI | Verwaltung, Analyse und Bereitstellung kontextbasierter Informationen. | Bernhard Mitschang, Johann Christoph Freytag |
| 2007 | BTW | Entwurf von Informationsintegrationssystemen auf der Basis der Merkmalsmodellierung. | Susanne Busse, Johann Christoph Freytag |
| 2007 | Mobiquitous | Distributed Service Deployment in Mobile Ad-Hoc Networks. | Artin Avanes, Johann Christoph Freytag, Christof Bornhvd |
| 2007 | SIGMOD | Efficient exploitation of similar subexpressions for query processing. | Jingren Zhou, Per-ke Larson, Johann Christoph Freytag, Wolfgang Lehner |
| 2006 | CIKM | Describing differences between databases. | Heiko Mller, Johann Christoph Freytag, Ulf Leser |
| 2005 | CaiSE | Query Processing Using Ontologies. | Chokri Ben Necib, Johann Christoph Freytag |
| 2005 | IDEAS | Semantic Query Transformation Using Ontologies. | Chokri Ben Necib, Johann Christoph Freytag |
| 2004 | ADBIS | Using Ontologies for Database Query Reformulation. | Chokri Ben Necib, Johann Christoph Freytag |
| 2004 | GI | Dynamic information fusion for genome annotation. | Heiko Mller, Peter Rieger, Katja Tham, Johann Christoph Freytag |
| 2003 | BTW | Rechnergesttzte Suche nach Korrelationen in komplexen Datenstzen der Biowissenschaften. | Stephan Heymann, Katja Tham, Peter Rieger, Johann Christoph Freytag |
| 2003 | CoopIS | Ontology Based Query Processing in Database Management Systems. | Chokri Ben Necib, Johann Christoph Freytag |
| 2002 | VLDB | Viator - A Tool Family for Graphical Networking and Data View Creation. | Stephan Heymann, Katja Tham, Axel Kilian, Gunnar Wegner, Peter Rieger, Dieter Merkel, Johann Christoph Freytag |
| 2002 | SSDBM | Access Support Tree & TextArray: A Data Structure for XML Document Storage & Retrieval. | Dieter Scheffner, Johann Christoph Freytag |
| 2000 | ADBIS | Managing Schemata for Semistructured Databases Using Constraints. | Andr Bergholz, Johann Christoph Freytag |
| 2000 | ER | XML Conceptual Modeling Using UML. | Rainer Conrad, Dieter Scheffner, Johann Christoph Freytag |
| 2000 | EuroPar | A Communication Infrastructure for a Distributed RDBMS (Research Note). | Michael Stillger, Dieter Scheffner, Johann Christoph Freytag |
| 2000 | SSDBM | Implementing Geospatial Operations in an Object-Relational Database System. | Johann Christoph Freytag, Miro Flasza, Michael Stillger |
| 1999 | VLDB | Quality-driven Integration of Heterogenous Information Systems. | Felix Naumann, Ulf Leser, Johann Christoph Freytag |
| 1997 | CoopIS | AQuES: An Agent-based Query Evaluation System. | Michael Stillger, Johann K. Obermaier, Johann Christoph Freytag |
| 1997 | IDEAS | Sequence Comparison Using a Relational Database Approach. | Andr Bergholz, Stephan Heymann, Jrg A. Schenk, Johann Christoph Freytag |
| 1996 | EuroPar | Modelling Resource Utilization in Pipelined Query Execution. | Myra Spiliopoulou, Johann Christoph Freytag |
| 1989 | SIGMOD | Extensible Query Processing in Starburst. | Laura M. Haas, Johann Christoph Freytag, Guy M. Lohman, Hamid Pirahesh |
| 1988 | VLDB | Implementing an Interpreter for Functional Rules in a Query Optimizer. | Mavis K. Lee, Johann Christoph Freytag, Guy M. Lohman |
| 1987 | SIGMOD | A Rule-Based View of Query Optimization. | Johann Christoph Freytag |
| 1987 | VLDB | Masking System Crashes in Database Application Programs. | Johann Christoph Freytag, Flaviu Cristian, Bo Khler |
| 1986 | SIGMOD | Rule-Based Translation of Relational Queries into Iterative Programs. | Johann Christoph Freytag, Nathan Goodman |
| 1986 | VLDB | Translating Aggregate Queries into Iterative Programs. | Johann Christoph Freytag, Nathan Goodman |