User-Defined Inferencing and Querying

RDF graph extension architectures enable the addition of user-defined capabilities.

Note: User-defined inferencing and querying capabilities is supported only if Oracle JVM is enabled on your Oracle Autonomous AI Database Serverless deployments. To enable Oracle JVM, see Use Oracle Java in Using Oracle Autonomous AI Database Serverless for more information.

Effective with Oracle Database 12c Release 1 (12.1):

• The inference extension architecture enables you to add user-defined inferencing to the presupplied inferencing support.

• The query extension architecture enables you to add user-defined functions and aggregates to be used in SPARQL queries, both through the SEM_MATCH table function and through the support for Apache Jena.

Note: The capabilities described in this chapter are intended for advanced users. You are assumed to be familiar with the main concepts and techniques described in RDF Graph Overview and OWL Concepts.

• User-Defined Inferencing
  The RDF Graph inference extension architecture enables you to add user-defined inferencing to the presupplied inferencing support.

• User-Defined Functions and Aggregates
  The RDF Graph query extension architecture enables you to add user-defined functions and aggregates to be used in SPARQL queries, both through the SEM_MATCH table function and through the support for Apache Jena.

• SPARQL Rule-Based Inference
  The RDF Graph inference extension architecture enables you to add SPARQL rule-based inference.