Understands how to combine and filter graph patterns using operators such as UNION, OPTIONAL, FILTER, and MINUS.
DBPedia SPARQL Endpoint Exercises
This slide tutorial teaches the user how to form SPARQL queries to answer various questions of interest and retrieve results from DBpedia's SPARQL endpoint. In [...]
SPARQL: Using Operators Tutorial and Quiz
This slide tutorial focuses on using various operators in SPARQL queries. Several examples are provided which include the RDF data being queried, the SPARQL query [...]
Querying Linked Data Quiz
Ten multiple choice questions that are intended to test one's knowledge after reading and viewing the materials in Module 2: Querying Linked Data (http://www.euclid-project.eu/modules/course2).URL: http://www.euclid-project.eu/content/chapter-2-quiz.htmlKeywords: [...]
Querying Linked Data
This module looks in great detail at SPARQL and introduces approaches for querying and updating semantic data. It covers the SPARQL algebra, the SPARQL 1.1 [...]
Storing and querying RDF data
These slides were used during a lecture in the course, "Practical Introduction to Semantic Technologies" at the University of Jyvaskyla (Finland). Part 1 focuses on [...]
Semantic Queries
This is the sixth chapter in MarkLogic's "Semantic Developer's Guide". This chapter discusses the principal techniques and tools used for performing semantic queries on RDF [...]
Foundations of RDF Databases
This older presentation presents the argument that the RDF data model can be viewed as an extension of the traditional database model, rather than as [...]
SPARQL Queries for Publications and Authors
This page contains SPARQL queries useful for finding information on authors and publications on VIVO. These query examples, if adapted, have other useful applications as [...]
On the Semantics of SPARQL Queries with Optional Matching under Entailment Regimes
This presentation covers the semantics of SPARQL queries with optional matching features under entailment regimes. It argues that normative semantics may lead to answers that [...]
Answering SPARQL Queries over Databases under OWL 2 QL Entailment Regime
This video presents an extension of the ontology-based data access platform Ontop that supports answering SPARQL queries under the OWL 2 QL direct semantics entailment [...]