There's a new version of Ontotext GraphDB that's open source and comes with a range of new plugins. GraphDB Workbench, which give developers a way to quickly develop knowledge graph prototypes, was also open-sourced as a separate project. 

Ontotext's GraphDB is a database for managing semantic information, and the latest release, GraphDB 9.0, aims to make it easier for developers to create and operate knowledge graphs by opening multiple integration extension points.

GraphDB is an RDF or triple-store database. Resource Description Framework (RDF) is a set of W3C specifications that started life as a metadata model, and has moved on to become a general method of modeling web data. GraphDB implements the RDF4J framework interfaces and the W3C SPARQL Protocol specification.

The new release features a major redesign of the database Plugin API, and the developers say this simplifies the way to implement complex software logic next to the core database engine. A number of plugins have been released as open-source, demonstrating how to solve common tasks such as data virtualization with the MongoDB Plugin, and a complex ranking of search results with the Autocomplete Index Plugin which offers suggestions for the URIs local names in the SPARQL editor and the View Resource page. A GraphDB GeoSPARQL plugin can be used to convert Well-Known Text from different coordinate reference systems (CRS) into the CRS84 format, which is the default CRS according to the Open Geospatial Consortium (OGC). GeoSPARQL is a standard for representing and querying geospatial linked data for the Semantic Web from the OGC. Another plugin supports advanced graph analytics with an RDFRank plugin.

Elsewhere, GraphDB Workbench now becomes a separate open-source project designed to give developers a way to quickly develop knowledge graph prototypes starting from the default AngularJS administrative interface. GraphDB also includes an open-source GraphDB.js driver optimized for Node.js and other rapid development frameworks. GraphDB supports OpenJDK 8 for its existing clients, and also every new Oracle Java Long Term Support (LTS) version.

More Information

GraphDB Website

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