---
id: BENCH-SCHEMA-EVOLUTION
type: project
status: active
tier: T1
title: schema-evolution
---

# schema-evolution

This concept defines the governance for schema-evolution. When working with schema-evolution, follow the rules below. The schema-evolution approach affects guardrail, boundary, invariant, durability.

- Prefer the documented schema-evolution pattern.
- Record exceptions to the schema-evolution rule.
- Weigh the guardrail and durability implications.
