Ontotext GraphDB is a highly-efficient and robust graph database with RDF and SPARQL support. This documentation is a comprehensive guide, which explains every feature of GraphDB as well as topics such as setting up a repository, loading and working with data, tuning its performance, scaling, etc.

Credits and licensing

GraphDB uses RDF4J as a library, taking advantage of its APIs for storage and querying, as well as the support for a wide variety of query languages (e.g., SPARQL and SeRQL) and RDF syntaxes (e.g., RDF/XML, N3, Turtle).

The development of GraphDB is partly supported by SEKT, TAO, TripCom, LarKC, and other FP6 and FP7 European research projects.

Full licensing information is available in the license files located in the /doc folder of the distribution package.

Helpful hints

Throughout the documentation there are a number of helpful pieces of information that can give you additional information, warn you or save you time and unnecessary effort. Here is what to pay attention to:


Hint badges give additional information you may find useful.


Tips badges are handy pieces of information.


Notes are comments or references that may save you time and unnecessary effort.


Warnings are pieces of advice that turn your attention to things you should be cautious about.