The word "metadata" means "data about data". Metadata articulates a context for objects of interest -- "resources" such as MP3 files, library books, or satellite images -- in the form of "resource descriptions". As a tradition, resource description dates back to the earliest archives and library catalogs. DCMI Metadata Basics
DCMI Abstract Model Table of contents 1. Introduction
DCMI Metadata Terms [DCMI Recommendation]. This periodically updated document provides a one-stop source of up-to-date information on DCMI metadata terms, including the classic Dublin Core Metadata Element Set, the DCMI Type Vocabulary, and resource classes used as formal domains and ranges. Supporting documents includes DCMI Specifications
Introduction The Dublin Core Metadata Element Set is a vocabulary of fifteen properties for use in resource description. The name "Dublin" is due to its origin at a 1995 invitational workshop in Dublin, Ohio; "core" because its elements are broad and generic, usable for describing a wide range of resources. The fifteen element "Dublin Core" described in this standard is part of a larger set of metadata vocabularies and technical specifications maintained by the Dublin Core Metadata Initiative (DCMI). The full set of vocabularies, DCMI Metadata Terms [DCMI-TERMS], also includes sets of resource classes (including the DCMI Type Vocabulary [DCMI-TYPE]), vocabulary encoding schemes, and syntax encoding schemes.