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Here's my attempt. I will update this with the magic you use to determine things like Fiscal_MonthNumber and Fiscal_MonthName, because right now they're the only non-intuitive part of your question, and it's the only tangible information you actually didn't include. The "best" (read:most efficient) way to populate a calendar table, IMHO, is to use a set, ...


Almost always surrogate keys (your "Auto Incrementing primary key") are best in data warehouses. I have seen very few exceptions where this is not the case (but some do exist) - yours does not seem to be exceptional. To answer why would be repeating stuff you can find all around the web, by the giants in the field, for instance: ...

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