RDA (Resource Description and Access) is a new cataloging standard that will replace AACR2. It is based on FRBR and defines descriptive elements for resources while separating content from carrier information. RDA aims to be easier to use, applicable online, provide effective description of all media types, and be compatible with other standards like Dublin Core. It will have a logical structure based on entity-relationship modeling and be developed through an open process involving libraries worldwide. RDA is scheduled for full implementation in 2010 and will impact cataloging systems and metadata schemas like MARC 21.