Question 210
A date dimension needs one unique record for every calendar day even when there are no sales. Which step should the analyst take?
Explanation
Correct Answer
Unique complete date keys support date relationships and time intelligence, supporting complete calendar dimension key.
Incorrect Answers
Descriptive labels are not guaranteed to identify one product. It would address stable product model relationship key, not complete calendar dimension key.
Slowly changing dimension versions require distinct keys to retain time-valid attributes. It may suit history-safe customer dimension key, not complete calendar dimension key.
Both columns determine the fact grain; dropping one creates collisions. It is useful for unique purchase-line identifier, not for complete calendar dimension key.






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