Querying RDF data

This older presentation presents the argument that the RDF data model can be viewed as an extension of the traditional database model, rather than as [...]

This brief exercise makes use of a triple index outside of SPARQL. It relies on previously loaded data and builds on queries which were run [...]

This exercise covers the use of SPARQL and XQuery together in a few different ways. This involves running a series of queries on the BBC [...]

A brief tutorial on how to explore a previously loaded graph database using a SPARQL endpoint. Gives several examples of queries using DBpedia and BBC [...]

This is just one of several tutorials in a sequence, and they should be done in order to gain the most benefit. This final tutorial [...]

This presentation covers the semantics of SPARQL queries with optional matching features under entailment regimes. It argues that normative semantics may lead to answers that [...]

This video presents an extension of the ontology-based data access platform Ontop that supports answering SPARQL queries under the OWL 2 QL direct semantics entailment [...]

This page, which contains SPARQL tools, tips, sample queries, is just starting out and the authors hope it can become a resource for useful snippets [...]