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PL-300 · Question #159

You have a Power BI dataset that contains a table named Temperature Readings. Temperature Readings contains the columns shown in the following table. The table has 12 million rows. All the columns are

The correct answer is A. Split the DateTime column into separate date and time columns.. To decrease the model adjustments are needed in the model itself, so of the selections to separate the date and time would reduce the size as the way vertipaq compressions works for repeated values.

Submitted by layla.eg· Apr 18, 2026Model the data

Question

You have a Power BI dataset that contains a table named Temperature Readings. Temperature Readings contains the columns shown in the following table. The table has 12 million rows. All the columns are needed for analysis. You need to optimize the dataset to decrease the model size. The solution must not affect the precision of the data. What should you do?

Exhibit

PL-300 question #159 exhibit

Options

  • ASplit the DateTime column into separate date and time columns.
  • BDisable the Power Query load.
  • CRound the Longitude column two decimal places.
  • DChange the data type of the TempCelsius column to Integer

How the community answered

(39 responses)
  • A
    77% (30)
  • B
    15% (6)
  • C
    5% (2)
  • D
    3% (1)

Explanation

To decrease the model adjustments are needed in the model itself, so of the selections to separate the date and time would reduce the size as the way vertipaq compressions works for repeated values.

Topics

#Model Optimization#Data Types#DateTime Handling#Data Size

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