Differentiates between a Default Graph and a Named Graph, and formulates queries using the GRAPH clause.
Schema-Agnostic Query Rewriting in SPARQL 1.1
SPARQL 1.1 supports the use of ontologies to enrich query results with logical entailments, and OWL 2 provides a dedicated fragment OWL QL for this [...]
Foundations of Semantic Web Technologies: SPARQL Entailment Regimes
Slides covering the following topics: SPARQL can now be used with RDF Schema, OWL, and RIF semantics. Entailment Regimes overwrite evaluation of basic graph patterns. [...]
SPARQL 1.1 Entailment Regimes
There are different possible ways of defining a basic graph pattern matching extension for an entailment relation. This document specifies one such way for a [...]
Dynamic Querying of Mass-Storage RDF Data with Rule-Based Entailment Regimes?
SPARQL is the W3C standard for querying RDF data, but it mostly provides means for querying simple RDF graphs only, whereas querying with respect to [...]
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 [...]
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 [...]
SPARQL 1.1
An overview of SPARQL including its history, and examples of queries with operators. Also includes brief discussion of Apache Jena (a Java Framework for Linked [...]
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: 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: Understanding Named Graphs
This tutorial explains how when uploading many RDF datasets using a tool such as Fuseki, they can be merged into one Default Graph. This also [...]