Functional Requirements for Subject Authority Data (FRSAD)

Developed by the International Federation of Library Associations (IFLA).

The Functional Requirements for Subject Authority Data (FRSAD) is a conceptual model and a companion document to the earlier Functional Requirements for Bibliographic Records (FRBR) and Functional Requirements for Authority Data (FRAD). FRSAD extends the model for FRBR Group 3 entities, which serve as the subjects of FRBR Works, while abandoning the FRBR Group 3 entity structure (Concept, Object, Event, Place) in favor of conceptual entities (Thema) that are known by name tokens (Nomen).