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Understands how to combine and filter graph patterns using operators such as UNION, OPTIONAL, FILTER, and MINUS.

SPARQL: Using DESCRIBE and CONSTRUCT Tutorial and Quiz

This slide tutorial focuses on using DESCRIBE and CONSTRUCT in SPARQL queries, but also includes other basic operators. Several examples are provided which include the [...]

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By |November 23rd, 2016|Comments Off on SPARQL: Using DESCRIBE and CONSTRUCT Tutorial and Quiz

SPARQL: Using ASK Tutorial and Quiz

This slide tutorial focuses on using ASK in SPARQL queries, but also includes other basic operators. Several examples are provided which include the RDF data [...]

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By |November 23rd, 2016|Comments Off on SPARQL: Using ASK Tutorial and Quiz

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: [...]

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By |October 20th, 2016|Comments Off on Querying Linked Data Quiz

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 [...]

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By |October 20th, 2016|Comments Off on Querying Linked Data

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 [...]

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By |September 1st, 2016|Comments Off on Storing and querying RDF data

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 [...]

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By |April 15th, 2016|Comments Off on Semantic Queries

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 [...]

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By |March 9th, 2016|Comments Off on Foundations of RDF Databases

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 [...]

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By |January 16th, 2016|Comments Off on SPARQL Queries for Publications and Authors

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 [...]

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By |January 16th, 2016|Comments Off on On the Semantics of SPARQL Queries with Optional Matching under Entailment Regimes

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 [...]

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By |January 16th, 2016|Comments Off on Answering SPARQL Queries over Databases under OWL 2 QL Entailment Regime