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CSA Loom — the Microsoft Fabric experience for Azure tenants where Fabric isn't yet available: lakehouses, warehouses, notebooks, semantic models, Activator rules, Data Agents, across Commercial, GCC, GCC-High, and DoD IL5

Tutorial: Ontology editor

CSA Loom ontology editor — verified working against a live console by the UAT harness on 2026-07-01.

Open the editor

  1. Sign in to your CSA Loom Console (for example https://<your-console-host>).
  2. Open or create a workspace from the Workspaces page.
  3. Click + New item and choose Ontology from the catalog.
  4. The editor opens at /items/ontology/<id>:

Ontology editor

What this editor does

An Ontology defines business object types, link types, actions, and interfaces over your data (preview). In Loom it is a typed modeling surface — structured forms, no freeform JSON — whose instances live in a real graph backend, and whose object types can be backed by a Lakehouse / Warehouse datasource with per-property column mapping. The editor's tabs are Object types, Link types, Actions, Interfaces, and Shared properties.

Getting started

  1. Define object types — On the Object types tab declare each business entity with the typed form — properties with base types, a title property, status, and color. No JSON textarea.
  2. Back a type with a datasource — Bind an object type to a Lakehouse / Warehouse table and map each ontology property to a source column — the editor browses the live Synapse schema so the column mapping is picked, not typed.
  3. Define link types and interfaces — Connect object types with typed link types (cardinality + properties), and declare Interfaces / Shared properties as contracts that object types implement.
  4. Create instances and links — Use the typed instance form to create real object instances and link instances between them — both persist to the graph backend (Apache AGE), and Actions execute as real graph transactions.

Learn more

Verified by the UAT harness