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Fedora 5.x uses a set of internal properties (see http://fedora.info/definitions/v4/repository) and supplies the following ontologies by default:.
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premis: http://www.loc.gov/premis/rdf/v1# test: info:fedora/test/ memento: http://mementoweb.org/ns# rdfs: http://www.w3.org/2000/01/rdf-schema# webac: http://fedora.info/definitions/v4/repository# rdfs: webac# acl: http://www.w3.org/ns/auth/acl# vcard: http://www.w3.org/2006/vcard/ns# iana: http://www.iana.org/assignments/relation/ xsi: http://www.w3.org/2001/XMLSchema-instance xmlns: http://www.w3.org/2000/01/rdf-schema# webac: http:///xmlns/ rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# fedora: http://fedora.info/definitions/v4/repository# xml: http://www.w3.org/XML/1998/namespace ebucore: http://www.ebu.ch/metadata/ontologies/ebucore/ebucore# ldp: http://www.w3.org/ns/ldp# dcterms: http://purl.org/dc/terms/ xs: http://www.w3.org/2001/XMLSchema fedoraconfig: http://fedora.info/definitions/v4/webac#config# [list of default namespaces needed]foaf: http://xmlns.com/foaf/0.1/ dc: http://purl.org/dc/elements/1.1/ |
This list is provided within Fedora as a configurable list: https://github.com/fcrepo4/fcrepo4/blob/master/fcrepo-webapp/src/main/resources/namespaces.yml
It is possible to include and use any ontology that exists, although it is recommended to use ontologies that are shown to be currently active and well-maintained for longevity purposes.
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