Changes in the conceptualization of bibliographic data caused by the introduction of the IFLA LRM model have strongly influenced the development and reorganization of cataloging principles and rules, bibliographic formats, and bibliographic information systems. Nevertheless, there is still a lack of both guidance and practices in LRM implementation to show how all the components should be applied consistently in cataloging systems, which we have tried to address by proposing a conceptual design for a cataloging user interface based on the LRM model.