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Differentiates between a Default Graph and a Named Graph, and formulates queries using the GRAPH clause.

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

SPARQL FAQs

This set of FAQs was written before SPARQL 1.1, making it obsolete for practical purposes. However, its treatment of topics such as how SPARQL deals [...]

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By |January 16th, 2016|Comments Off on SPARQL FAQs

Learning SPARQL: 2nd Edition – Sample data, queries, scripts, and output

These sample queries and output were originally published as teaching tools intended to complement Learning SPARQL: 2nd Edition by Bob DuCharme. The preface of the [...]

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By |January 16th, 2016|Comments Off on Learning SPARQL: 2nd Edition – Sample data, queries, scripts, and output

University of Southampton SPARQL endpoint

This interface implements SPARQL and SPARQL+ via HTTP Bindings. Enabled operations: select, construct, ask, describe (Max. number of results : 2000). Includes three sample queries: [...]

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By |January 16th, 2016|Comments Off on University of Southampton SPARQL endpoint

Learning SPARQL: 2nd Edition

This book teaches how to use SPARQL 1.1, starting off with simple queries that demonstrate the language using a query-by-example approach and then taking the [...]

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By |January 16th, 2016|Comments Off on Learning SPARQL: 2nd Edition

SPARQL by Example: The Cheat Sheet

SPARQL Cheat Sheet is a short collection of slides intended to act as a guide or reference to SPARQL developers. It includes the syntax and [...]

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By |December 12th, 2015|Comments Off on SPARQL by Example: The Cheat Sheet

Learn About SPARQL 1.1

This S5 format slideshow details the changes made to the query language in SPARQL 1.1- it is not a basic introduction to SPARQL and assumes [...]

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By |September 15th, 2015|Comments Off on Learn About SPARQL 1.1

Expressive Languages for Querying the Semantic Web

SPARQL 1.1 was recently released, which includes entailment regimes for RDFS and OWL vocabularies and a mechanism to express navigation patterns through regular expressions. Unfortunately, [...]

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By |September 15th, 2015|Comments Off on Expressive Languages for Querying the Semantic Web

Using SPARQL with RDFS and OWL Entailment

This chapter accompanied the lecture on SPARQL with entailment regimes given at the 7th Reasoning Web Summer School in Galway, Ireland, 2011. It first introduces [...]

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By |September 15th, 2015|Comments Off on Using SPARQL with RDFS and OWL Entailment

SPARQL Beyond Subgraph Matching

This paper describes the extension of the Semantic Web query language SPARQL by defining the semantics of SPARQL queries under the entailment regimes of RDF, [...]

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By |September 15th, 2015|Comments Off on SPARQL Beyond Subgraph Matching