Uses available tools, servers, and endpoints to issue queries against a dataset.
Visualising The Location Graph With Gephi and Ordnance Survey Linked Data
Building on a previous post, the author shares another example using a SPARQL endpoint to query Linked Open Data and turn the results into a [...]
Ordnance Survey Linked Data: A Simple Spatial Query
In this blog post, the author discusses the relative lack of spatial indexes for data in RDF triple stores, compared to data stored in GIS [...]
Simple Protege Tutorial: Running SPARQL Queries on Both Ontologies
Building on the previous videos in the series, this final video shows how to use the Jena Fuseki Server issue SPARQL queries against two different [...]
Simple Protege Tutorial: Running Simple SPARQL Queries
In this video, the Jena Fuseki Server is run on the computer's local host and the ontology file (previously created using the Protege tool) is [...]
Simple Protege Tutorial: Downloading and Running Jena Fuseki Server
In this video, the Jena Fuseki Server is downloaded so that it can be used to run SPARQL queries against the ontology (previously created using [...]
Wikidata SPARQL Query Tutorial
This video presentation demonstrates how to construct SPARQL queries simply and easily using the Wikidata Query Service. It works through an example of searching for [...]
SPARQL: Using SELECT Tutorial and Quiz
This slide tutorial focuses on using SELECT in SPARQL queries, but also includes other basic operators. Several examples are provided which include the RDF data [...]
DBPedia SPARQL Endpoint Exercises
This slide tutorial teaches the user how to form SPARQL queries to answer various questions of interest and retrieve results from DBpedia's SPARQL endpoint. In [...]
SPARQL: Using Operators Tutorial and Quiz
This slide tutorial focuses on using various operators in SPARQL queries. Several examples are provided which include the RDF data being queried, the SPARQL query [...]
SPARQL: Using DESCRIBE and CONSTRUCT Tutorial and Quiz
This slide tutorial focuses on using DESCRIBE and CONSTRUCT in SPARQL queries, but also includes other basic operators. Several examples are provided which include the [...]