The RDA Registry opens up
The March 2022 release of RDA Toolkit was accompanied by an upgrade to the RDA Registry. This article describes the Registry upgrade in more detail. The RDA Registry is an interface to the RDA Vocabularies, including the RDA element sets and value vocabularies together with alignments and mappings to related bibliographic standards. The Registry provides free downloads of RDA Vocabularies data files in several different formats for use by developers. The Registry also offers open access to entity, element, and concept definitions and scope notes without the need for a subscription to RDA Toolkit.
See pp. 34-36 of IFLA Metadata Newsletter, vol. 8, n° 1, June 2022