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Technical Services Division (TSD)

RDA Information

Identifying RDA records

While there are many differences between RDA and AACR2 records, here are some of the most visible differences between the cataloging standards.

Note that catalogers will be permitted to update AACR2 records with RDA elements without changing the Leader and 040 coding of the AACR2 record, so over time it will be possible to see records with a mix of styles.

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Preparing for implementation in your library

System and OPAC issues

Cataloging Issues

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Additional information and training resources

The Library of Congress Resource Description and Access (RDA) page // is a comprehensive portal to the most up-to-date information on RDA documentation, training and implementation plans.

A variety of free RDA and FRBR training is available via the Catalogers Learning Workshop. //

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Last Reviewed: January 16, 2024