What should go in the Identifier element in Dublin Core?
The Identifier element has to be an unambiguous reference because it defines the actual item/resource being described. When describing the kind of resources you will be creating within your NOF project the Identifier element will most likely need to include the Project’s Image Number and any reference numbers used by the host institutions (e.g. accession numbers). It could be a URI (Uniform resource identifier) but should not be just the URL of the resource, though the URL could be included.
