science

IFLA Library Reference Model

IFLA Library Reference Model is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand IFLA Library Reference Model rather than just read about it. In short: The IFLA Library Reference Model (IFLA 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…

Key takeaways

IFLA Library Reference Model belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect IFLA Library Reference Model to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of IFLA Library Reference Model from memory before moving on to harder problems.

Reference excerpt

The IFLA Library Reference Model (IFLA 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). The IFLA LRM is intended to be used as the basis of cataloguing rules and implementing bibliographic information systems. It has Library of Congress subject heading number 2017004509.

Differences from FR-series models IFLA LRM adds super-classes res ("thing") and agent to facilitate formal relationship definitions. 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.

See also Resource Description and Access (RDA) FRBRoo CIDOC Conceptual Reference Model BIBFRAME

Notes

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 Dousa, Thomas M. "The IFLA LRM Model: An introduction" (PDF). ALCTS, American Library Association. Archived from the original (PDF) on 2019-08-19. Retrieved 2020-08-27. Dunsire, Gordon (August 2018). "Introducing IFLA-LRM". National Library of Australia. Oliver, Chris, IFLA Library Reference Model: What and why? (PDF), RDA Steering Committee, archived from the original on July 10, 2019

Illustrations

Worked examples

Example 1 — a first encounter with IFLA Library Reference Model

Start with the simplest possible case. Write down what IFLA Library Reference Model claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to IFLA Library Reference Model before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about IFLA Library Reference Model ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of IFLA Library Reference Model

In research: IFLA Library Reference Model appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses IFLA Library Reference Model in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: IFLA Library Reference Model is common in secondary-school and first-year university syllabi. It links to neighbouring topics Library 2.0, Library and information science stubs, Library cataloging and classification, so understanding it makes those chapters shorter.
In everyday life: Look for IFLA Library Reference Model outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study IFLA Library Reference Model in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what IFLA Library Reference Model means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain IFLA Library Reference Model out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is IFLA Library Reference Model in simple terms?

Why does IFLA Library Reference Model matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study IFLA Library Reference Model?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on IFLA Library Reference Model.