LinkML
Linked data Modeling Language
Judgement: Assess
Multi-output schema language; strong in biomedical, niche elsewhere.
YAML-based schema language for modelling structured data and ontologies. One LinkML schema can be compiled to JSON Schema, SHACL, RDF/OWL, Pydantic classes, Protobuf, and SQL DDL — useful when the same domain model needs to power validation, semantics, and code generation simultaneously.
Sits between schema languages (JSON Schema, AVRO Schema) and ontology languages (RDF/OWL, SHACL). Pragmatic, opinionated, and increasingly the default modelling vehicle in linked-data-friendly research consortia.
Why this is listed as niche
Specialised modelling language with deepest adoption in biomedical and research data communities (Monarch, NIH Bridge2AI, INCLUDE). Powerful for cross-format schemas — generates JSON Schema, SHACL, RDF, Pydantic, Java, etc. from one source — but outside life-sciences its mindshare is still small.
At a glance
- Category
- Schema
- Governance
- LinkML community / Monarch Initiative
- Status
- Stable; widely used in biomedical and life-sciences data modelling
- First released
- 2019
Links
Related standards
Other standards in Schema.
- AVRO Schema — Apache Avro Schema
- JSON Schema
- Protobuf — Protocol Buffers
- SQL DDL — SQL Data Definition Language
- XML Schema — XML Schema Definition (XSD)
- Table Schema — Frictionless Table Schema
See LinkML in context
Open the interactive Data Landscape to compare LinkML against every other open standard, or grab the raw JSON. Spotted something wrong? Open an issue.