Testing Data Vault-based Data Warehouse -

Ensure "Zero Keys" or "Ghost Records" exist in Hubs to handle late-arriving data or missing lookups without breaking the model. 3. Data Integrity & Reconciliation This ensures that "what went in is what came out."

Verify every Hub has a unique business key and no duplicates. Ensure the Load_Date and Record_Source are present. Testing Data Vault-Based Data Warehouse

Confirm Links correctly map relationships between Hubs. Test for referential integrity (though often not enforced by DB constraints in DV, it must be validated via query). Ensure "Zero Keys" or "Ghost Records" exist in

Data Vault should allow for high-concurrency loading. Ensure the Load_Date and Record_Source are present

The Business Vault contains transformed data (e.g., calculated fields or cleaned addresses).

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