Rollback / Data Migration Compatibility
Kind: tension
Record: tension:data-migration-compatibility-rollback
Canonical: Schema
"rollback" (correctness-core layer) is traded against "Data Migration Compatibility" (correctness-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Data Migration Compatibility" and choosing an explicit operating point.
Listed in Tensions, after Auto-Remediation / Manual Remediation and before Blue-Green Deployment / Infrastructure Cost.