Seonglae ChoUniform Resource Name
persistent, location-independent, resource identifiers
urn:scheme1997년도 RFC 2141 문서에서 정의
<URN> ::= "urn:" <NID> ":" <NSS>rfc2141
Network Working Group R. Moats Request for Comments: 2141 AT&T Category: Standards Track May 1997 URN Syntax Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements.
https://datatracker.ietf.org/doc/html/rfc2141