'rdf_db:url_protocol'/1

Documentation
- Reference manual
- Packages
  - SWI-Prolog Semantic Web Library 3.0
    - Plugin modules for rdf_db
      - Hooks into the RDF library
        
        rdf_db:rdf_open_hook/3
        
        rdf_db:rdf_load_stream/3
        
        rdf_db:rdf_input_info/3
        
        rdf_db:rdf_file_type/2
        
        rdf_db:url_protocol/1

rdf_db:url_protocol(?Protocol)

True if Protocol is a URL protocol recognised by rdf_load/2.