Models in Unity Catalog

Models in Unity Catalog is a Databricks ai / ml capability, introduced 2023.

Workspace Model Registry → Models in Unity Catalog

Model lifecycle management governed by Unity Catalog - registered models live in the three-level namespace with aliases instead of stages.

• Registered models live in the catalog.schema namespace with aliases like @champion, so promoting a model to production is just repointing an alias - and every version carries Unity Catalog lineage and access control. 🔗
• You migrate old model versions across with copy_model_version(). 🔗

⚠ Limitations: Doesn't support stages, webhooks, email notifications, comment threads, or the activity log, and several search-API fields and operators (order_by, tag filters, and operators beyond exact equality) are unsupported. 🔗

Category

AI / ML

Introduced

2023🔗

Also known as

UC models, Models in UC

Verified

2026-07-23