DAP4: RDF Service
From OPeNDAP Documentation
Overview
The RDF service is invoked by appending the suffix .rdf to the file part of the dataset's referent (aka base) URL. The RDF response is an XML document containing an RDF version of the DAP4: Dataset Response.
Request
The request a query string (constraint expression) is not required, but if present will obey the rules for constraints as would a DAP:4 Dataset Request
Response
The RDF response is an XML document containing an RDF version of the DAP4: Dataset Response.