Understands how to combine and filter graph patterns using operators such as UNION, OPTIONAL, FILTER, and MINUS.
Using DBPedia
A brief video on DBPedia and SPARQL. Demonstrates how to query DBPedia for useful/interesting questions. Shows not just how to construct SPARQL queries, but also [...]
SPARQL: Querying the Web of Data
This slide-set aims to introduce the RDF query language SPARQL "from a user's perspective". This presentation predates the introduction of SPARQL 1.1, but may still [...]
SPARQL in a Nutshell
A simple but comprehensive slide presentation covering the basics of what SPARQL is and how it is used. NOTE: This resource was created before SPARQL [...]
From SQL to SPARQL
This presentation gives an overview of the SPARQL query language and how it is different than SQL, which is used for relational databases. Mentions several [...]
Apache Jena Tutorial: Using SPARQL with Jena to Query RDF Document
This tutorial shows how to use integrated Apache Jena objects to query a RDF document using SPARQL. Shows how to use several SPARQL keywords. Also [...]
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 [...]
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 [...]
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 [...]
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 [...]
Simple SPARQL Tutorial: Using the UNION Keyword
Tutorial showing how to modify a query to combine the results of two separate graph patterns (or conditions) using the UNION keyword. The topic is [...]