Finding and your answer
Calendar.DateKey column
Direct match
97%
How the model read it
The authoritative register requires an Int64 Calendar.DateKey in YYYYMMDD form. Current gold observes the exact table, column name and data type; actual value encoding was not available for verification.
Workbook evidence
Cited current gold
Open questions
Should the YYYYMMDD encoding and uniqueness of Calendar.DateKey be tested against source/model data during implementation validation?