General

Hint

This documentation is written to be used by technical people. Whether you are a database engineer or system designer evaluating how this database fits to your system, or you are a developer who has already integrated it and actively employs its power - this is the complete reference. It is also useful for system administrators who need to support and maintain a GraphDB-based system.

Note

The GraphDB documentation presumes that the reader is familiar with databases. The required minimum of Semantic Web concepts and related information is provided in the Introduction to the Semantic Web section in References.

Ontotext GraphDB is a highly efficient and robust graph database with RDF and SPARQL support. This documentation is a comprehensive guide that 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.

The GraphDB database supports a highly available replication cluster, which has been proven in a number of enterprise use cases that required resilience in data loading and query answering. If you need a quick overview of GraphDB or a download link to its latest releases, please visit the GraphDB product section.

Credits and licensing

GraphDB uses RDF4J as a library, utilizing 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).

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

Hint badges give additional information you may find useful.

Tip

Tip badges are handy pieces of information.

Note

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

Warning

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