Implementation of a new cataloging standard called Resource Description and Access or RDA continues to be an important topic for catalogers. However, it affects all parts of the library, especially reference and public services. Changes to the cataloging rules will shape how data about library resources are entered, which in turn will influence how people search, find, understand, and navigate the library catalog. As mediators between library resources and end users, public services' personnel will notice their daily work is affected by these changes. A basic understanding of RDA will make it easier to help users find what they need. This article begins with an introduction to RDA and a brief history of cataloging. This is followed by a review of the literature and a description of major differences between the established cataloging instructions found in the Anglo-American cataloguing rules (AACR2) and the new practices outlined in RDA. The article will conclude with a brief exploration of potential future enhancements made possible by implementation of RDA. Throughout, the article will focus on how changes in cataloging code may affect searching, retrieval, and navigating the library catalog. RDA… THE BASICS RDA is the newest version of cataloging best practices. What does that mean and who, other than catalogers, cares? All librarians should care because cataloging rules fundamentally affect what and how data are recorded. The underlying data combined with the software functionality of catalogs and discovery tools affect what is displayed on the screen and how the user interacts with the catalog. Librarians often function as mediators between patrons and the library's resources, which are represented by bibliographic records in the library catalog. A basic understanding of cataloging practices will help