normalization encoding urn urn syntax xml identification public identifiers namespace sgml metadata

information namespaces namespace management specifications identifier resource management document management urn xml oasis

standards dtds identifiers resources urn xml oasis schemas namespace

information namespaces specifications iptc standards multimedia identifiers newsml urn xml

global standards security iana object identifier oid urn asn.1 namespace registration

information security uri encoding oid object identifiers urn asn.1 namespace

resolution ietf rfc syntax identifiers urn namespace registration

namespaces iana identifier management best current practice urn

networking resolution standards security scalability protocols http urn metadata

email automation standards uri internet protocols urn addressing universal resource identifier metadata url

networking issn resolution standards bibliographic identifiers protocols urn metadata

identifier management persistence urn namespace registration

security considerations internet standards identifier iana best current practice urn namespace definition namespace urn resolution registration

security considerations resolution uri ddds naptr identifiers protocols urn standards track dns

standards ddi urn identification metadata