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rr:inverseExpression
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http://www.w3.org/ns/r2rml#inverseExpression

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Copy 'PREFIX rr: <http://www.w3.org/ns/r2rml#>'

rr:

lang:en
An expression that allows, at query processing time, use of index-based access to the the (underlying) relational tables, instead of simply retrieving the table rows first and then applying a filter. This property is useful for retrieval based on conditions involving subject, predicate, or object generated from logical table column(s) and involves some transformation.