Catrust Playground — Schema migrations you can prove

Step 1 ⬡ Model Your schema, live-rendered as a diagram

Step 2 ▶ Query Load data & query it — typed, FK-aware

Step 3 Σ Migrate v1 → v2 in one click, zero SQL written

Step 4 Δ Rollback Exact rollback — even after new writes

Schema v1

Data v1

Query

Schema v2

Mapping v1→v2

Data v2 (live)

schema { entities · foreign_keys · attributes }

instance Name : Schema { rows · FK links }

query { from · where · select } — follows FKs with dots: e.dept.dept_name

schema v2 — the shape you want to migrate to

mapping — declares how v1 maps onto v2. This IS the migration.

instance : v2 — production data after migration (note the new hire!)

⬡

Your CQL schema renders here as a live diagram.

Results

Follow the steps above — results appear here.

Ready