FRBR

 Functional Requirements for Bibliographic Records is a conceptual entity–relationship model developed by the International Federation of Library Associations and Institutions (IFLA) that relates user tasks of retrieval and access in online library catalogues and bibliographic databases from a user’s perspective. It represents a more holistic approach to retrieval and access as the relationships between the entities provide links to navigate through the hierarchy of relationships. The model is significant because it is separate from specific cataloguing standards such as Anglo-American Cataloguing Rules (AACR) or International Standard Bibliographic Description (ISBD).

FRBR comprises groups of entities:

Group 1 entities are work, expression, manifestation, and item (WEMI). They represent the products of intellectual or artistic endeavor.

Group 2 entities are person, family and corporate body, responsible for the custodianship of Group 1’s intellectual or artistic endeavor.

Group 3 entities are subjects of Group 1 or Group 2’s intellectual endeavor, and include concepts, objects, events, places.

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