A star schema has what type of relationship between a dimension and fact table?
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Many-to-many
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One-to-one
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One-to-many
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All of the above.
C
Correct answer
Explanation
In a star schema, the relationship between a dimension table and fact table is one-to-many - one dimension record relates to many fact records (Option C). Option A (many-to-many) is incorrect because star schemas don't have direct many-to-many. Option B (one-to-one) is wrong because dimensions describe multiple facts. Option D is incorrect since the relationship is specifically one-to-many.