Part I provides conceptual and usage information about RDF Semantic Graph.

This part contains the following chapters:

• RDF Knowledge Graph Overview
  Oracle Spatial and Graph support for semantic technologies consists mainly of Resource Description Framework (RDF) and a subset of the Web Ontology Language (OWL). These capabilities are referred to as the RDF Knowledge Graph feature of Oracle Spatial and Graph.
• OWL Concepts
  You should understand key concepts related to the support for a subset of the Web Ontology Language (OWL).
• Simple Knowledge Organization System (SKOS) Support
  You can perform inferencing based on a core subset of the Simple Knowledge Organization System (SKOS) data model, which is especially useful for representing thesauri, classification schemes, taxonomies, and other types of controlled vocabulary.
• Semantic Indexing for Documents
  Information extractors locate and extract meaningful information from unstructured documents. The ability to search for documents based on this extracted information is a significant improvement over the keyword-based searches supported by the full-text search engines.
• Fine-Grained Access Control for RDF Data
  The default control of access to the Oracle Database semantic data store is at the model level: the owner of a model can grant select, delete, and insert privileges on the model to other users by granting appropriate privileges on the view named RDFM_<model_name>. However, for applications with stringent security requirements, you can enforce a fine-grained access control mechanism by using the Oracle Label Security option of Oracle Database.
• RDF Semantic Graph Support for Apache Jena
  RDF Semantic Graph support for Apache Jena (also referred to here as support for Apache Jena) provides a Java-based interface to Oracle Spatial and Graph RDF Semantic Graph by implementing the well-known Jena Graph, Model, and DatasetGraph APIs.
• RDF Semantic Graph Support for Eclipse RDF4J
  Oracle RDF Graph Adapter for Eclipse RDF4J utilizes the popular Eclipse RDF4J framework to provide Java developers support to use the RDF Semantic Graph feature of Oracle Database.
• User-Defined Inferencing and Querying
  RDF Semantic Graph extension architectures enable the addition of user-defined capabilities.
• RDF Views: Relational Data as RDF
  You can create and use RDF views over relational data in Oracle Spatial and Graph RDF Semantic Graph.
• RDF Integration with Property Graph Data Stored in Oracle Database
  The property graph data model is supported in Oracle Spatial and Graph. Oracle Spatial and Graph provides built-in support for RDF views of property graph data stored in Oracle Database.