IFLA Library Reference Model

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Entities and relationships in the IFLA LRM.

IFLA's Library Reference Model (LRM) is a conceptual entity–relationship model developed by the International Federation of Library Associations and Institutions (IFLA) that expresses the "logical structure of bibliographic information". It unifies the models of Functional Requirements for Bibliographic Records (FRBR), Functional Requirements for Authority Data (FRAD) and Functional Requirements for Subject Authority Data (FRSAD).[1] The LRM is intended to be used as the basis of cataloguing rules and implementing bibliographic information systems.[2] It has Library of Congress subject heading number 2017004509.[3]

Differences from FR-series models[]

LRM adds super-classes res ("thing") and agent to facilitate formal relationship definitions.[4] Time span and place are entities rather than literal values.

It uses the same Work, Expression, Manifestation, Item (WEMI) model as FRBR Group 1 entities. The FRBR Group 2 corporate body and FRAD family are combined into a single collective agent type. FRBR Group 3 entities are deprecated. A redefined nomen type encompasses name from FRAD plus nomen, identifier, and controlled access point from FRSAD.[4]

See also[]

Notes[]

  1. ^ Riva, Le Bœuf & Žumer 2017, pp. 5, 9.
  2. ^ LSIT 2020, section "How is IFLA LRM used?"
  3. ^ LCSH 2017.
  4. ^ Jump up to: a b IFLA 2016, p. 1.

References[]

  • IFLA (2016). "Overview of differences between IFLA LRM and the FRBR-FRAD-FRSAD models" (PDF). International Federation of Library Associations and Institutions.
  • "IFLA Library Reference Model (LRM)". Librarianship Studies and Information Technology. 2020.
  • "Subject heading 2017004509: IFLA Library Reference Model". Library of Congress Subject Headings (LCSH). 2017.
  • Riva, Pat; Le Bœuf, Patrick; Žumer, Maja (August 2017). "IFLA Library Reference Model: A Conceptual Model for Bibliographic Information" (PDF). International Federation of Library Associations and Institutions.

Further reading[]


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