The schema had been stable for months. Then the request hit your desk: add a new column.
You know the drill. Update the database schema. Migrate data. Adjust the API. Patch the ORM models. Update validation. Rewrite queries. Trigger another deployment. Each step brings risk—schema drift, downtime, missed edge cases. The cost of adding a single column can eat an entire sprint.
A new column should be simple. It should not mean stopping deployments or coordinating late-night release windows. Yet most systems still treat schema changes as dangerous events. The friction comes from coupling runtime code to a fixed database structure. Break that link, and schema evolution becomes part of normal development—not a dreaded milestone.