1.5 RDF Metadata Tables and Views

Oracle Database maintains several tables and views in the network owner’s schema to hold metadata related to RDF data.

Some of these tables and views are created by the SEM_APIS.CREATE_RDF_NETWORK procedure, as explained in Quick Start for Using Semantic Data, and some are created only as needed.Table 1-13 lists the tables and views in alphabetical order. (In addition, several tables and views are created for Oracle internal use, and these are accessible only by network owners of the schema-private RDF networks).

Table 1-13 RDF Metadata Tables and Views

Name	Contains Information About	Described In
RDF_CRS_URI$	Available EPSG spatial reference system URIs	Spatial Support
RDF_VALUE$	Subjects, properties, and objects used to represent statements	Statements
SEM_DTYPE_INDEX_INFO	All data type indexes in the network	Using Data Type Indexes
SEM_MODEL$	All RDF graphs defined in the database	RDF Graphs
SEM_NETWORK_INDEX_INFO$	RDF network indexes	SEM_NETWORK_INDEX_INFO View
SEM_RULEBASE_INFO	Rulebases	Inferencing: Rules and Rulebases
SEM_RULES_INDEX_DATASETS	Database objects used in inferred graphs	Inferred Graphs
SEM_RULES_INDEX_INFO	Inferred graphs	Inferred Graphs
SEM_VMODEL_INFO	RDF graph collections	RDF Graph Collections
SEM_VMODEL_DATASETS	Database objects used in RDF graph collections	RDF Graph Collections
SEMCL_inferred-graph-name	owl:sameAs clique members and canonical representatives	Optimizing owl:sameAs Inference
SEMI_inferred-graph-name	Triples in the specified inferred graph	Inferred Graphs
SEMM_rdf-graph-name	Triples in the specified RDF graph	RDF Graphs
SEMR_rulebase-name	Rules in the specified rulebase	Inferencing: Rules and Rulebases
SEMU_rdf-collection-name	Unique triples in the RDF graph collection	RDF Graph Collections
SEMV_rdf-collection-name	Triples in the RDF graph collection	RDF Graph Collections