Interacting with RDF data
SPARQL Tutorial: Optional Information
This brief tutorial emphasizes that RDF is semi-structured data, which means that SPARQL has the ability to query for data but will fail when that [...]
Simple SPARQL Tutorial: Understanding Blank Nodes
This tutorial explains the purpose of blank nodes and gives a brief demonstration of their use.URL: https://www.youtube.com/watch?v=jnL9ZqLHJj0Keywords: SPARQL, Blank nodesAuthor: Sadawi, NoureddinDate created: 2014-03-03 07:00:00.000 [...]
Simple SPARQL Tutorial: Using FILTER, NOT EXISTS, MINUS Keywords
Tutorial showing how to modify a query to return instances of data where a specific property does not exist- the FILTER, NOT EXISTS, and MINUS [...]
Flavors of OWL
This lesson looks at the different flavors of OWL, each of which is a distinct subset of the full OWL standard. Some are simpler and/or [...]
Never Write SPARQL Again – Build your Queries Visually
A demonstration of Gruff, a freely available graphical triple-store browser that attempts to make data retrieval more pleasant and powerful with a variety of tools [...]
Linked Data Life Cycles, Part 2
Based on the author's experience in Linked Data publishing and consumption over the past years, he has identified involved parties and fundamental phases, which provide [...]
Linked Data, Life Sciences, and RDF Stores – Exploration and Demonstration
There is an explosion of linked RDF datasets in the life sciences domain. In practice, the exploration of these data sources is far from trivial. [...]
Learn SPARQL
This set of lessons is an introduction to SPARQL, the Semantic Web query language. The lessons begin with a basic SPARQL tutorial for beginners before [...]
Introduction to SPARQL
A simple (yet thorough) introduction to SPARQL query language based on the W3C documentation. Focuses on aspects of the query language present in SPARQL 1.0 [...]
SPARQL Tutorial: Alternatives in a Pattern
This brief tutorial shows that another way of dealing with the semi-structured nature of RDF data is to query for one of a number of [...]