RDA: Resource Description and Access is the new standard for resource description and access designed for the digital world. Built on the foundations established by AACR2, RDA provides a comprehensive set of guidelines and instructions on resource description and access covering all types of content and media. Benefits of RDA include:
Additional background on the development of RDA is available on the JSC site at http://www.rda-jsc.org/rda.html#background.
Nannette Naught of IMT, who serves as document manager and ALA Publishing's technical lead on the project, has created the Entity Relationship (ER) diagram. Tom Delsey, editor of RDA, worked closely with Naught in the project. An ER diagram is used in software or database development to produce a conceptual data model. An input for development of the functional specification, the ER diagram checks RDA Element Analysis against the FRBR model.
Formatted for printing in 8.5 x 11 inch sheets, the ER diagram is a visual representation of the RDA data model. Below are links to PDF files.
Though not strictly part of the ER diagram set, the Relationships Overview may help put the individual Relationship ER diagrams in context.