15.63 SEM_APIS.DROP_INFERRED_GRAPH

Format

SEM_APIS.DROP_INFERRED_GRAPH(
     inferred_graph_name IN VARCHAR2, 
     named_g_in          IN SEM_GRAPHS DEFAULT NULL, 
     dop                 IN INT DEFAULT 1,
     network_owner       IN VARCHAR2 DEFAULT NULL,
     network_name        IN VARCHAR2 DEFAULT NULL);

Description

Drops (deletes) an inferred graph (rules index).

Parameters

inferred_graph_name

Name of the inferred graph to be deleted.

named_g_in

Causes only the triples with the specified graph names in the inferred graph to be deleted. A null value (the default) drops the entire inferred graph.

For example, named_g_in => sem_graphs('<urn:G1>','<urn:G2>') drops only the triples in an inferred graph with graph names G1 and G2; the rest of the inferred graph is not dropped.

dop

Degree of parallelism for a parallel execution of triple deletion. Applies only if the named_g_in parameter is not null.

network_owner

Owner of the RDF network. (See Table 1-2.)

network_name

Name of the RDF network. (See Table 1-2.)

Usage Notes

You can use this procedure to delete an inferred graph that you created using the SEM_APIS.CREATE_INFERRED_GRAPH procedure.

If you drop only a subset of the inferred graph with specified named graphs (that is, when named_g_in is not null) on an inferred graph with a VALID or INCOMPLETE status, then the resulting status of the inferred graph after the drop is set to INCOMPLETE.

For information about RDF network types and options, see RDF Networks.

Examples

The following example deletes an inferred graph named OWLTST_IDX.

EXECUTE sem_apis.drop_inferred_graph('owltst_idx');

The following example deletes only inferred triples with graph names G1 and G2 that belong to the inferred graph named OWLNG_IDX. Any inferred triples in the default graph and other named graphs remain in the inferred graph.

EXECUTE sem_apis.drop_inferred_graph('owlng_idx',sem_graphs('<urn:G1>','<urn:G2>'));