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Quiz: Cardinality, Relationships & Star Schema Design

10 scenario-based psychometric questions evaluating dimensional modeling, surrogate keys, relationship direction, and SCDs.

8 minutesInteractive tutorial

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Question 1 of 10Answer saved0 answered

A retail company exports transactional history into a single wide flat table containing 35 columns, combining order headers, customer demographics, and product attributes. Why does loading this single wide table into Power BI degrade query performance compared to a Star Schema?

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