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 [...]
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 [...]
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 [...]
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 [...]