How does true RDA cataloguing change how we catalogue?

New data models do influence the task of cataloguing. Differences in process and thinking arose when cataloguers moved from doing RDA cataloguing in the MARC21 format to doing true(r) RDA cataloguing in a relational database, modelled on the IFLA-LRM. The main issues, benefits, training needs and workflow solutions are described in full, and the effect on the task of cataloguing of using a nonMARC21 data entry interface in a relational database is compared with creating bibliographic records in the MARC21 format.