Dublin Core Metadata Element Set

The Dublin Core Metadata Initiative (DCMI) maintains an authoritative specification of metadata terms used to describe digital and physical resources across diverse domains. The standard comprises the fifteen terms of the Dublin Core Metadata Element Set alongside dozens of extended properties, classes, and encoding schemes designed for interoperability in Linked Data environments. Originally created in 2000, Dublin Core provides a foundational vocabulary that enables consistent resource discovery and description across libraries, archives, museums, and digital repositories worldwide.

DCMI metadata terms are expressed as RDF vocabularies organized across four namespaces, with the /elements/1.1/ namespace preserving the original fifteen core elements and the /terms/ namespace providing formally constrained versions suitable for semantic web applications. The initiative has achieved international recognition through publication as ISO 15836 standards, with the core elements standardized as ISO 15836-1:2017 and extended terms as ISO 15836-2:2019.