Resource Description and Access
Resource Description and Access
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Resource Description and Access

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Resource Description and Access

Resource Description and Access (RDA) is a standard for descriptive cataloging initially released in June 2010, providing instructions and guidelines on formulating bibliographic data. Intended for use by libraries and other cultural organizations such as museums and archives, RDA is the successor to Anglo-American Cataloguing Rules, Second Edition (AACR2).

RDA emerged from the International Conference on the Principles & Future Development of AACR held in Toronto in 1997. It is published jointly by the American Library Association, the Canadian Federation of Library Associations, and the Chartered Institute of Library and Information Professionals (CILIP) in the United Kingdom. Maintenance of RDA is the responsibility of the RDA Steering Committee (RSC). As of 2015, RSC is undergoing a transition to an international governance structure, expected to be in place in 2019.

RDA instructions and guidelines are available through RDA Toolkit, an online subscription service, and in a print format.

RDA training materials and texts are available online and in print.

RDA is a package of data elements, guidelines, and instructions for creating library and cultural heritage resource metadata that are well-formed according to international models for user-focused linked data applications. The underlying conceptual models for RDA are the Functional Requirements for Bibliographic Records (FRBR), Functional Requirements for Authority Data (FRAD), and Functional Requirements for Subject Authority Data (FRSAD) maintained by IFLA, and will be compliant with the Library Reference Model, the IFLA standard that consolidates them.

RDA Vocabularies is a representation of the RDA entities, elements, relationship designators, and controlled terms in RDF (Resource Description Framework). The Vocabularies are intended to support linked data applications using RDA. They are maintained in the Open Metadata Registry, a metadata registry, and released via GitHub and the RDA Registry.

The human-readable labels, definitions, and other textual annotations in the Vocabularies are known as RDA Reference. The RDA Reference data are used in the production of RDA Toolkit content.

The RDA Vocabularies and RDA Reference are available under an open license.

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