Interacting with RDF data
How-to Guide for Creating a Linked Data Site
The author attempts to walk the reader through the process of creating what he considers to be a Linked Data site. He assumes that the [...]
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: Querying Named Graphs – using NAMED GRAPH and GRAPH
Continuing the discussion of Named Graphs from the previous tutorial in the series, this tutorial discusses the functionality provided by using URIs to name graphs. [...]
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 [...]
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: 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 [...]
Apache Jena Tutorial: Write Models in Different Formats with Jena (RDF,TURTLE,JSON)
This tutorial shows how to retrieve previously loaded data, which was written in RDF/XML format, and load it into a Jena object called a "model". [...]
Data Warehousing, Data Mining & Data Visualisation
This slide presentation explains what a data warehouse is and provides a history of the practice. It discusses the dimensional vs. normalized approach, as well [...]
RDFS vs. OWL
Previous lessons in this module introduced both RDF Schema and OWL as data modeling languages for describing RDF data. So which should you use? This [...]
RDFUnit: An RDF Unit-Testing Suite
RDFUnit is a test-driven, data-debugging framework that can run automatically and manually generated test cases against an endpoint. All test cases are executed as SPARQL [...]