Entity Schemas¶

Entity schemas define the core metadata objects in OpenMetadata.

Overview¶

Entities represent the fundamental building blocks of metadata in OpenMetadata. Each entity has a well-defined schema that specifies its properties, relationships, and validation rules.

Categories¶

Data Assets¶

• Data Assets - Tables, topics, dashboards, pipelines, ML models
• Services - Database, messaging, dashboard, pipeline services

Organization¶

• Teams & Users - Organizations, teams, users, roles
• Policies & Roles - Access control and permissions

Governance¶

• Glossary - Business glossaries and terminology

Metrics¶

• Metrics - KPIs and measurements

Common Properties¶

All entities share these common properties:

• id: Unique identifier (UUID)
• name: Entity name
• fullyQualifiedName: Hierarchical unique name
• description: Rich text description
• owner: Entity owner reference
• tags: Classification tags
• version: Entity version number
• updatedAt: Last update timestamp
• updatedBy: User who made the update
• href: API endpoint URL

Entity Relationships¶

Entities are connected through typed relationships:

• Contains: Hierarchical containment
• Owns: Ownership
• Uses: Usage relationships
• Produces: Creation relationships
• DerivedFrom: Lineage relationships

Next Steps¶

Explore specific entity categories to learn more about each schema type.