Fedora is an open-source digital object repository system that provides persistent storage and delivery of digital content. It is implemented as a set of Java services and stores content and associated metadata in XML files. The repository can scale to support millions of objects and provides features such as versioning, audit trails and triple store capabilities through integrated systems like Mulgara.

16. Digital Object Model <foxml:digitalObject PID=&quot;demo:31&quot; VERSION=&quot;1.1&quot; xmlns:foxml=&quot;info:fedora/fedora-system:def/foxml#&quot; xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot; xsi:schemaLocation=&quot;info:fedora/fedora-system:def/foxml# http://www.fedora.info/definitions/1/0/foxml1-1.xsd&quot;> <foxml:objectProperties> <foxml:property NAME=&quot;info:fedora/fedora-system:def/model#state&quot; VALUE=&quot;Active&quot;/> <foxml:property NAME=&quot;info:fedora/fedora-system:def/model#ownerId&quot; VALUE=&quot;fedoraAdmin&quot;/> <foxml:property NAME=&quot;info:fedora/fedora-system:def/model#createdDate&quot; VALUE=&quot;2008-07-02T05:09:42.015Z&quot;/> <foxml:property NAME=&quot;info:fedora/fedora-system:def/view#lastModifiedDate&quot; VALUE=&quot;2008-07-02T05:09:42.015Z&quot;/> </foxml:objectProperties> <foxml:datastream CONTROL_GROUP=&quot;X&quot; ID=&quot;DC&quot; STATE=&quot;A&quot; VERSIONABLE=&quot;true&quot;> <foxml:datastreamVersion CREATED=&quot;2008-07-02T05:09:43.328Z&quot; FORMAT_URI=&quot;http://www.openarchives.org/OAI/2.0/oai_dc/&quot; ID=&quot;DC1.0&quot; LABEL=&quot;Dublin Core Record for this object&quot; MIMETYPE=&quot;text/xml&quot;> <foxml:xmlContent> <oai_dc:dc xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot; xmlns:oai_dc=&quot;http://www.openarchives.org/OAI/2.0/oai_dc/&quot;> <dc:title>Apache Batik 1.5 Demo Directory</dc:title> <dc:creator>Chris Wilper</dc:creator> <dc:creator>The Apache Group</dc:creator> <dc:subject>svg</dc:subject> <dc:publisher>The Apache Group</dc:publisher> <dc:format>image/svg+xml</dc:format> <dc:identifier>demo:31</dc:identifier> <dc:relation>http://xml.apache.org/batik/</dc:relation> <dc:rights>The Apache License</dc:rights> </oai_dc:dc> </foxml:xmlContent> </foxml:datastreamVersion> </foxml:datastream> <foxml:datastream CONTROL_GROUP=&quot;E&quot; ID=&quot;DS1&quot; STATE=&quot;A&quot; VERSIONABLE=&quot;true&quot;> <foxml:datastreamVersion CREATED=&quot;2008-07-02T05:09:43.328Z&quot; ID=&quot;DS1.0&quot; LABEL=&quot;Local copy of batikBatik.svg&quot; MIMETYPE=&quot;image/svg+xml&quot;> <foxml:contentLocation REF=&quot;http://www.fedora-commons.org/demo/misc/batikBatik.svg&quot; TYPE=&quot;URL&quot;/> </foxml:datastreamVersion> </foxml:datastream> An Example

17. Content Model Architecture “ an integrated structure for persisting and delivering the essential characteristics of digital objects in Fedora” Modelling behaviours and structure of objects. Complicated, fairly new, not widely implemented yet, in flux. … can also be safely ignored when starting out. (which we did not realise)