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Is there a distinction between a “namespace prefix” in XML and a “metadataPrefix” in OAI-PMH?

April 26, 2017metadataprefix oai-pmh XML

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Is there a distinction between a “namespace prefix” in XML and a “metadataPrefix” in OAI-PMH?

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Yes. A “namespace prefix” in XML hooks a qualified name with the appropriate namespace declaration and therefore the URI for the namespace scoping the name. For example, has “oai_dc” as a namespace prefix, which indicates “dc” is scoped to the namespace URI indicated in the namespace declaration “xmlns:oai_dc=…” on the nearest ancestor element. A “metadataPrefix” in OAI-PMH is the string used to uniquely identify a particular metadata format for an OAI repository. “metadataPrefix” is a required argument for ListRecords, GetRecord and ListIdentifiers requests. An OAI repository’s mappings from metadataPrefixes to metadata namespace URIs and their XML schemas are exposed via ListMetadataFormats. See http://www.openarchives.org/OAI/openarchivesprotocol.html for more information on OAI-PMH metadataPrefixes. While the OAI-PMH reserves “oai_dc” as a metadataPrefix, no XML namespace prefixes are dictated in OAI-PMH. In fact, the OAI-PMH metadataPrefix and the XML namespace prefi