What I make of it
In store as uml. The MOF metamodel layer is what makes it a data-model standard.
OMG MOF and UML (Object Management Group)
Metadata Model
Cross Domain
openly published
About the Unified Modeling Language Specification Version 2.5.1...
Also in the API standards catalog
This standard shows up on both sides of the house — as a data model here, and as a standard applied in API operations. Same standard, two lenses.
See it as an API standard →Other cross domain data models
BFO (Basic Formal Ontology)
Ontology / Vocabulary
BPMN (Business Process Model and Notation)
Metadata Model
Creative Commons Rights Expression Language (ccREL)
Ontology / Vocabulary
CloudEvents
Exchange Schema
CMMN (Case Management Model and Notation)
Metadata Model
W3C CSV on the Web (CSVW)
Metadata Model
Data Vault 2.0
Metadata Model
DMN (Decision Model and Notation)
Metadata Model
Event Ontology
Ontology / Vocabulary
FOAF
Ontology / Vocabulary
Frictionless Data Package / Table Schema
Metadata Model
IAO (Information Artifact Ontology)
Ontology / Vocabulary