How do you create surrogate key using ab initio?
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What is data type of the surrogate key?
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If I have table T1 and table T2 T1 has 250 cols and 10,000 rows T2 has 2 billion rows and 10 cols Which one would be Fact table and which one would be Dimension table and why ?
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What is junk dimension? What is the difference between junk dimension and degenerated dimension?