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Conceptual Data Model / Framework

An abstract model not tied to a specific serialization (e.g. FRBR, CIDOC-CRM)

14 standards

Activity Streams 2.0

(AS2)

A JSON-LD vocabulary for representing social activities, powering ActivityPub and the fediverse.

Conceptual Data Model / Framework active World Wide Web Consortium Updated May 23, 2017

CIDOC Conceptual Reference Model

(CIDOC-CRM)

An ISO-standard ontology for integrating cultural heritage data across museums, libraries, and archives.

Conceptual Data Model / Framework active CIDOC CRM Special Interest Group (ICOM-CIDOC) Updated June 1, 2024

Common European Research Information Format

(CERIF)

Models the entities of scientific research for interchange between research information systems.

Conceptual Data Model / Framework active euroCRIS Est. 1991

DCMI Abstract Model

(DCAM)

Defines the underlying information structures for all Dublin Core metadata descriptions.

Conceptual Data Model / Framework active Dublin Core Metadata Initiative Updated June 4, 2007

Functional Requirements for Bibliographic Records

(FRBR)

Introduced the Work-Expression-Manifestation-Item model that reshaped bibliographic cataloging.

Conceptual Data Model / Framework historical International Federation of Library Associations and Institutions Updated February 1, 2009

IFLA Library Reference Model

(IFLA LRM)

A conceptual model unifying bibliographic entities like works, expressions, and manifestations.

Conceptual Data Model / Framework active International Federation of Library Associations and Institutions Updated August 1, 2017

indecs Framework

(indecs)

A foundational metadata framework for interoperability in digital content commerce and rights.

Conceptual Data Model / Framework historical International DOI Foundation Updated November 15, 2015

Industry Foundation Classes

(IFC)

An open data schema for exchanging building and construction models across platforms.

Conceptual Data Model / Framework active buildingSMART International Updated January 1, 2024

Nanopublication

Packages a single scientific claim with its provenance and metadata as citable RDF named graphs.

Conceptual Data Model / Framework active Nanopublication Community Est. 2009

Open Archival Information System

(OAIS)

A reference model defining the functions and information flows needed for long-term digital preservation.

Conceptual Data Model / Framework active Consultative Committee for Space Data Systems Updated December 1, 2024

Portland Common Data Model

(PCDM)

A flexible linked data model for representing digital collections in repository systems like Fedora and Samvera.

Conceptual Data Model / Framework active Fedora/Samvera/Islandora Communities Est. 2014

Records in Contexts

(RiC)

Connects archival records with people, places, and events through a unified conceptual model.

Conceptual Data Model / Framework active International Council on Archives Updated October 1, 2025

Verifiable Credentials Data Model

(VC)

A data model for issuing tamper-evident digital credentials that holders can present and verifiers can trust.

Conceptual Data Model / Framework active World Wide Web Consortium Updated May 4, 2025

Web Annotation Data Model

A structured model for attaching comments, tags, and other content to specific parts of web resources.

Conceptual Data Model / Framework active World Wide Web Consortium Updated February 23, 2017