Understanding the Structure of the RDA: A Librarian's Guide
                                
                                
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                                    4 min read                                
                            
                                First published online in 2010, Resource Description and Access (RDA) succeeded the Anglo-American Cataloguing Rules (AACR2) as the modern cataloging standard for libraries. The structure of the RDA represents a fundamental shift toward the digital environment, basing its framework on a relational entity-relationship model to describe resources more flexibly and comprehensively for online users.