Demonstrates a working knowledge of the forms and uses of SPARQL result sets (SELECT, CONSTRUCT, DESCRIBE, and ASK).
Tarql: SPARQL for Tables
Tarql is a command-line tool for converting CSV files to RDF using SPARQL 1.1 syntax. In short, a CSV file’s contents are input into a [...]
Using the Convert CSV to RDF ingest tool
This guide will walk through the use of the Convert CSV to RDF tool, a semi-automated method of converting comma separated or tab separated text [...]
SPARQL and Linked Data Homework Exercises
This document contains several "written" and "electronic" homework questions originally from the course "Semantic Web Topics" at LeHigh University. They include: Write a series of [...]
Ordnance Survey Linked Data: Combining Postcode and Spatial Queries
Building on previous blog posts, the author shows how to query and combine data from two different datasets. Although the datasets were published by the [...]
Ordnance Survey Linked Data: A Simple Postcode Query
This blog post shares give some simple examples of what can be done with the Code-Point(R) Open dataset, available as Linked Open Data (LOD). This [...]
Ordnance Survey Linked Data: Simple SPARQL Example
This blog post shares how to retrieve several variables of data from the Ordnance Survey dataset, available as Linked Open Data (LOD). Includes SPARQL queries [...]
Pulling SKOS "prefLabel" and "altLabel" Values Out of DBpedia
In this blog post, the author proposes that DBpedia may be the best source of reusable URIs when one is seeking to describe entities in [...]
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 [...]
SPARQL: Using ASK Tutorial and Quiz
This slide tutorial focuses on using ASK in SPARQL queries, but also includes other basic operators. Several examples are provided which include the RDF data [...]
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 [...]