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Uses FILTER to formulates queries that eliminate solutions from a result set.

Apache Jena Tutorial: Using SPARQL with Jena to Query RDF Document

This tutorial shows how to use integrated Apache Jena objects to query a RDF document using SPARQL. Shows how to use several SPARQL keywords. Also [...]

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By |August 13th, 2015|0 Comments

SPARQL Tutorial: Optional Information

This brief tutorial emphasizes that RDF is semi-structured data, which means that SPARQL has the ability to query for data but will fail when that [...]

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By |August 13th, 2015|0 Comments

Simple SPARQL Tutorial: Using FILTER, NOT EXISTS, MINUS Keywords

Tutorial showing how to modify a query to return instances of data where a specific property does not exist- the FILTER, NOT EXISTS, and MINUS [...]

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By |August 13th, 2015|0 Comments

SPARQL Tutorial: Filters

This brief tutorial discusses how graph matching allows patterns in a graph to be found. This section describes how the values in a solution can [...]

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By |August 13th, 2015|0 Comments