Schema Changes

Detecting and tracking structural changes to your data assets

Schema changes (schema drift) are modifications to your data structure: columns added, removed, or renamed; data types changed; tables created or dropped. These changes can break downstream systems like dbt models, dashboards, and reports if not caught early.

AnomalyArmor detects changes by comparing discovery runs. When a column disappears or a type changes, you get alerted before your pipelines fail.

Change Types

Change	Risk Level	Impact
Column removed	High	Breaks queries referencing it
Table removed	High	Breaks all dependent queries
Column renamed	High	Old name no longer works
Type changed	Medium	May affect aggregations
Column added	Low	Usually safe
Table added	Low	Informational

Next Steps

View Change History

See what changed and when

Set Up Alerts

Get notified of breaking changes