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Which Power BI layer is responsible for extracting and transforming data before it enters the model?

  1. A DAX
  2. B Power Query (M)
  3. C The report canvas
  4. D Row-level security
Answer

Power Query (M)

Transformation should happen as far upstream as possible: in the source database first, then Power Query, and only in DAX when the calculation depends on user interaction.

All Power BI MCQs

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