Dublin Core

"The Dublin Core™", also known as the Dublin Core™ Metadata Element Set, is a set of fifteen "core" elements (properties) for describing resources. This fifteen-element Dublin Core™ has been formally standardized as ISO 15836, ANSI/NISO Z39.85, and IETF RFC 5013. The core properties are part of a larger set of DCMI Metadata Terms. "Dublin Core™" is also used as an adjective for Dublin Core™ metadata, a style of metadata that draws on multiple RDF vocabularies, packaged and constrained in Dublin Core™ application profiles.