Oracle Spatial & Graph
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https://docs.oracle.com/en/database/oracle/oracle-database/18/rdfrm/spatial-and-graph-rdf-semantic-graph-developers-guide.pdf A rulebase is an object that contains rules. The following Oracle-supplied rulebases are provided: • RDFS • RDF (a subset of RDFS) • OWLSIF (empty) • RDFS++ (empty) • OWL2RL (empty) • OWLPrime (empty) • SKOSCORE (empty)