Querying RDF data
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 [...]
SPARQL Tutorial: Results
This tutorial describes the four result forms used by SPARQL: SELECT, CONSTRUCT, DESCRIBE,and ASK. Also discusses the solution modifiers: PROJECTION, OFFSET/LIMIT, ORDER BY, and DISTINCT.URL: [...]
Simple SPARQL Tutorial: Sorting/Ordering Results .. Using ORDER BY, MIN & MAX
Tutorial explaining how the ORDER BY and MIN & MAX keywords allow one to order the results returned by a SPARQL query. Example uses the [...]
Simple SPARQL Tutorial: Using LIMIT and OFFSET Keywords
Tutorial explaining how the LIMIT and OFFSET keywords allow one to restrict the number of results returned by a SPARQL query. The instructor has some [...]
Simple SPARQL Tutorial: SPARQL query … the OPTIONAL Graph Pattern
Tutorial showing how to modify a query to return instances of data that may or may not exist- the OPTIONAL Graph Pattern.URL: https://www.youtube.com/watch?v=Bu24sfQcyowKeywords: SPARQLAuthor: Sadawi, [...]
SPARQL Tutorial: Basic Patterns
A brief, text-based tutorial covering basic patterns and solutions, the main building blocks of SPARQL queries. Discusses variables and fixed values, the SELECT query, and [...]
Simple SPARQL Tutorial: Searching with Blank Nodes
Building on the previous tutorial of the series, this tutorial shows how to construct and run SELECT queries when a dataset has blank nodes.URL: https://www.youtube.com/watch?v=y2jbA2pQL44Keywords: [...]
Simple SPARQL Tutorial: More on SPARQL UNION
Tutorial explaining how the UNION keyword works using RDF principles. Topic is continued from the last video of the series, which showed an example of [...]
Discoverability of SPARQL Endpoints for Linked Open Data
In "Design Issues", Tim Berners-Lee stated that "to make the data be effectively linked, someone who only has the URI of something must be able [...]
Simple SPARQL Tutorial: Querying Multiple Datasets (with Jena Fuseki Server)
Tutorial showing how to use Apache Jena's Fuseki to query multiple datasets.URL: https://www.youtube.com/watch?v=9KXJSrevvp8Keywords: Fuseki, Apache Jena, SPARQLAuthor: Sadawi, NoureddinDate created: 2014-03-03 07:00:00.000 Language: http://id.loc.gov/vocabulary/iso639-2/engTime required: [...]