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Why does Power BI apply transformations in the order shown in Applied Steps?

hard📝 Conceptual Q10 of 15
Power BI - Power Query Editor
Why does Power BI apply transformations in the order shown in Applied Steps?
ABecause all steps run in parallel
BBecause it randomly chooses the order
CBecause the data source dictates the order
DBecause each step depends on the previous step's output
Step-by-Step Solution
Solution:

  1. Step 1: Understand transformation dependencies

    Each step uses the output of the previous step as input, so order matters.

  2. Step 2: Explain why order is fixed

    Random or parallel execution would break dependencies and cause errors.

  3. Final Answer:

    Because each step depends on the previous step's output -> Option D

  4. Quick Check:

    Applied Steps order = dependency chain [OK]
Quick Trick: Steps run sequentially due to dependencies [OK]
Common Mistakes:
  • Thinking steps run randomly or in parallel
  • Assuming data source controls step order
  • Ignoring dependency chain

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