Testing Data Vault-based Data Warehouse [ 8K 2026 ]

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."

Test the performance of PIT tables; they should significantly speed up the joining of multiple Satellites. Testing Data Vault-Based Data Warehouse

Verify every Hub has a unique business key and no duplicates. Ensure the Load_Date and Record_Source are present. Ensure "Zero Keys" or "Ghost Records" exist in

All source data (even if "dirty") must be stored in the Raw Vault. Verify every Hub has a unique business key and no duplicates

Query a PIT table for a specific date in the past. Verify it correctly identifies the "active" Satellite records for that timestamp. 5. Business Vault & Logic Testing

Check that Satellites are correctly attached to their parent Hub/Link and that the Hash_Diff (used for change detection) is calculating correctly. 2. Load Pattern Testing (Technical ETL)