des-bronze-layer-design

A bronze layer is a raw or near-raw storage boundary in data pipelines that preserves source fidelity, ingestion evidence, and audit metadata. You need it to ensure downstream transformations are safe, traceable, and recoverable.

You design a bronze layer specification by defining policies for schema drift, idempotency, deduplication boundaries, and replay/backfill support. This ensures operational safety and preserves source evidence without applying business conformance.

Yes, you need a Phase 08 ingestion specification and handoff available. Bronze layer design requires configured input artifacts detailing ingestion patterns and upstream handoffs to properly define quarantine and rejected data behaviors.

No, bronze layer design strictly focuses on raw evidence storage, metadata, retention, and access control. It does not implement pipeline logic or downstream Silver and Gold business transformations.

The best way to ensure lineage and audit readiness is to specify mandatory metadata columns and source-to-bronze traceability expectations. This approach captures ingestion evidence required for downstream transformation safety.