rda

RDA is an initialism used for several concepts. The two most common meanings are Resource Description and Access (library cataloging) and Recommended Dietary Allowance (nutrition).

Resource Description and Access (RDA) is a cataloging standard for describing resources and creating access points in libraries and cultural heritage institutions. It superseded AACR2 and is designed for the digital environment, aligning with the FRBR and FRAD concepts. Many national libraries and institutions adopt it, using the RDA Toolkit and local policies to record data such as authorship, title, publication, physical description, subject terms, and relationships among entities.

Recommended Dietary Allowance (RDA) is the daily intake level sufficient for nearly all healthy people in a specific life stage and gender group. It is part of the Dietary Reference Intakes (DRIs) developed by the National Academy of Medicine (formerly the Institute of Medicine). The RDA serves as a target for planning and assessing nutrient intakes and informs nutrition labeling, guidelines, and fortification.