Dublin Core

Initially developed as fifteen terms in 1998 the set of elements has grown over time and in 2008 was redefined as an Resource Description Framework (RDF) vocabulary.

The Dublin Core Element Set was a response to concern about accurate finding of resources on the Web, with some early assumptions that this would be a library function.

[15] Subsequent to the specification of the original 15 elements, Qualified Dublin Core was developed to provide an extension mechanism to be used when the primary 15 terms were not sufficient.

[16] Qualified Dublin Core was not limited to these specific refinements, allowing communities to create extended metadata terms to meet their needs.

This is shown in this excerpted example provided by Chan and Hodges:[11] Title: D-Lib Magazine Title.alternative: Digital Library Magazine Identifier.ISSN: 1082-9873 Publisher: Corporation for National Research Initiatives Publisher.place: Reston, VA. Subject.topical.LCSH: Digital libraries - Periodicals The DCMI Metadata Terms lists the current set of the Dublin Core vocabulary.

[18] This policy describes how terms are assigned and also sets limits on the amount of editorial changes allowed to the labels, definitions, and usage comments.

Dublin Core concepts and semantics are designed to be syntax independent[clarification needed] and apply to a variety of contexts, as long as the metadata is in a form suitable for interpretation by both machines and people.

[24] The Zope CMF's Metadata products, used by the Plone, ERP5, the Nuxeo CPS Content management systems, SimpleDL, and Fedora Commons also implement Dublin Core.