Testing Data Vault-based Data Warehouse May 2026

Verify that the hashing algorithm (MD5 or SHA-1) produces identical keys for the same business keys across different source systems. 4. Point-in-Time (PIT) & Bridge Table Validation

Data Vault excels at "insert-only" logic. Your tests should mirror this. Testing Data Vault-Based Data Warehouse

Since Data Vault is pattern-based, the first layer of testing ensures the "plumbing" follows the methodology. Verify that the hashing algorithm (MD5 or SHA-1)

The Business Vault contains transformed data (e.g., calculated fields or cleaned addresses). Testing Data Vault-Based Data Warehouse

All source data (even if "dirty") must be stored in the Raw Vault.

Run row counts and sum-checks between the Source Landing Zone and the Raw Vault.

You should be able to trace any record in a Star Schema back to its specific Hub and Source system.