Querying RDF data
Simple SPARQL Tutorial: Assigning Values, String Functions .. more on Subqueries
Building on previous tutorials in the series, this tutorial quickly reviews how to bind properties to variables, then moves on to showing how string functions [...]
Simple SPARQL Tutorial: Using DISTINCT to Eliminate Duplicate Results
Tutorial showing how to modify a query to eliminate duplicate entries of instances of data (especially useful when querying multiple datasets).URL: https://www.youtube.com/watch?v=fcTVVuVKfaEKeywords: SPARQLAuthor: Sadawi, NoureddinDate [...]
Simple SPARQL Tutorial: Counting with COUNT
Tutorial explaining how the COUNT keyword allows one to determine the number of triples present in a dataset. Also shows how to use COUNT to [...]
Apache Jena Tutorial: Download and Setup Jena in Eclipse
This tutorial shows how to download and setup the Apache Jena API with Eclipse, so that the user can start developing Semantic Web applications using [...]
Simple SPARQL Tutorial: Querying public data sources (SPARQL Endpoints)
This tutorial explains what how to query publicly available datasets using SPARQL and DBpedia's SNORQL endpoint.URL: https://www.youtube.com/watch?v=GISGk2klQtQKeywords: SPARQL, DBpedia, SPARQL endpointAuthor: Sadawi, NoureddinDate created: 2014-03-03 [...]
Simple SPARQL Tutorial: Subqueries (Queries Inside Queries)
Tutorial explaining how the it is possible to nest one query within another query in order to avoid the queries running independently (and thus returning [...]
Installing and Managing Virtuoso SPARQL Endpoint
Instructions for installing, configuring, and managing Virtuoso SPARQL endpoints (community edition). This tutorial documents instructions for installing, configuring and managing Virtuoso Open Source Edition (VOSE) [...]
Simple SPARQL Tutorial: Querying Multiple Datasets (with ARQ Query Engine)
This tutorial demonstrates how to query several datasets at the same time using ARQ. A later video in the series shows how to use Fuseki [...]
SPARQL Nuts & Bolts
The "SPARQL 101" lesson introduced SPARQL, explained how it relates to other query languages, and went through its basic syntax. This lesson builds on that [...]
Retrieving And Using SKOS Taxonomy Data and More from DBpedia
This slide presentation was originally given at Taxonomy Boot Camp 2014. The author briefly explains what SKOS is and demonstrates how to use its properties [...]