RDF Graph Security in Virtuoso. Controlling access to Named Graphs and Graph Groups is critical to constructing a security matrix for any DBMS.
This article describes how to do so in Virtuoso. RDF Graph Groups. Parliament High-Performance Triple Store. Strabon.di.uoa.gr. Getting started using Virtuoso as a triplestore. Just about all the RDF triplestores I've been trying were designed from the ground up to store RDF triples.
OpenLink Software's Virtuoso is a database server that can also store (and, as part of its original specialty, serve as an efficient interface to databases of) relational data and XML, so some of my setup and usage steps required learning a few other aspects of it first. For example, the actual loading of RDF is done using Virtuoso's WebDAV support, so I had to learn a bit about that. At first this seemed like another obstacle along the way to my goal of loading RDF and then issuing SPARQL queries against it, but I reminded myself that in a fast, free database server that supports a variety of data models, WebDAV support is most certainly a feature, not a bug. The possibility of a single server that can store both XML content and RDF triples of metadata about that content could be very interesting for publishers. curl -i -T fakeAddrBookPt1.rdf -u joeuser:jupw.
Neo4j Sparql Plugin v0.2-SNAPSHOT. Insert quads This endpoint enables the insertion of quads into the Neo4j Server.
Figure 1. VirtuosoUniversalServer - W3C Wiki. OWLIM. 4store - Scalable RDF storage.