DCMI Metadata Basics. 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. The modern "metadata" field that gave rise to Dublin Core and other recent standards emerged with the Web revolution of the mid-1990s. You can learn more about metadata and DCMI by exploring the pages listed in the menu bar above: the Home page, Metadata Basics (this page), Specifications, Community and Events, and About Us. Early Dublin Core workshops popularized the idea of "core metadata" for simple and generic resource descriptions.
Starting in 2000, the Dublin Core community focused on "application profiles" -- the idea that metadata records would use Dublin Core together with other specialized vocabularies to meet particular implementation requirements. Next steps: DCMI Abstract Model. Table of contents 1.
Introduction This document specifies an abstract model for Dublin Core metadata. The primary purpose of this document is to specify the components and constructs used in Dublin Core metadata. It defines the nature of the components used and describes how those components are combined to create information structures.
This document is primarily aimed at the developers of software applications that support Dublin Core metadata, people involved in developing new syntax encoding guidelines for Dublin Core metadata and people developing metadata application profiles based on DCMI vocabularies or on other compatible vocabularies. The DCMI Abstract Model builds on work undertaken by the World Wide Web Consortium (W3C) on the Resource Description Framework (RDF) [RDF, RDFS]. The DCMI Abstract Model is represented here using UML class diagrams [UML]. 2. 2.1 The DCMI Resource Model The abstract model of the resources described by descriptions is as follows: 2.4 Notes 3. 4. 5. 6.
DCMI Specifications. 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 Namespace Policy [DCMI Recommendation]. This document describes how metadata terms are assigned URIs by DCMI and the policies governing changes to the documented meanings associated with those URIs. DCMI term declarations represented in RDF schema language. Interoperability Levels for Dublin Core Metadata [DCMI Recommended Resource]. Guidelines for Dublin Core Application Profiles [DCMI Recommended Resource]. Singapore Framework for Dublin Core Application Profiles [DCMI Recommended Resource]. Dublin Core Metadata Element Set, Version 1.1.
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.
The terms in DCMI vocabularies are intended to be used in combination with terms from other, compatible vocabularies in the context of application profiles and on the basis of the DCMI Abstract Model [DCAM]. References.