SCHEMA CHANGE PREFLIGHT
SchemaShield
Explore three interactive schema-change cases without touching a catalog. Every hosted result comes from a committed synthetic fixture and links its decision to the supporting evidence.
The hosted demo makes no live DataHub connection, never writes back, and never uses production data.

VERIFIED LOCAL ROUNDTRIP
A real catalog check behind the demo.
A separate replay against DataHub OSS v1.6.0 read the catalog, followed two lineage hops, wrote a risk tag and decision document, and then read both back to verify the result.
- Observed fields
- 3
- Downstreams
- 2
- Verified tag
- SchemaShieldRiskHigh
- Decision document
- Verified
list_schema_fieldsadd_tagssave_documentget_entities2-hop lineageVerification evidence is reported here; the hosted interactive cases remain OFFLINE SNAPSHOT and cannot mutate any catalog.
Choose a replay case.
These fixtures are synthetic catalog snapshots modeled for DataHub 1.6.0. They demonstrate three narrow, reproducible rules.
Inspect the proof, not a promise.
Risk, evidence references, and generated artifacts come from the deterministic offline core. Nothing shown here was written to DataHub.
Select a case and run the preflight to reveal its evidence-backed decision.