Functional Requirements: the FRBR Family of Models
The "FRBR family" of conceptual models consists of three entity-relationship models which are not cataloguing rules but rather conceptual models on how bibliographic data may be configured as the basis for the implementation of such rules.
- Functional Requirements for Bibliographic Records (FRBR), published in 1998.
- Functional Requirements for Authority Data (FRAD), published in 2009.
- Functional Requirements for Subject Authority Data (FRSAD), published in 2010.