PL-300 Model the data Practice Question
Which TWO of the following are true about using the 'Mark as Date Table' feature in Power BI?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The date table must have a column with unique date values
Options C and E are correct. Option C is correct because the 'Mark as Date Table' feature requires the designated date column to contain unique, non-duplicate date values to function properly. Option E is correct because marking a date table enables time intelligence functions like TOTALYTD, which rely on a properly marked date table for accurate calculations. Option A is wrong because the feature is not required for relationships involving a date column; relationships can exist without marking a date table. Option B is wrong because the date column must have unique dates, not duplicate ones. Option D is wrong because marking a date table does not automatically create all date hierarchy columns; it only designates the table as the date table, and hierarchies must be created manually or through other means.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It is required for any relationship involving a date column
Why it's wrong here
Not required for relationships.
- ✗
The date column can contain duplicate dates
Why it's wrong here
Must be unique.
- ✓
The date table must have a column with unique date values
Why this is correct
The date column must be unique.
- ✗
It automatically creates all date hierarchy columns (Year, Quarter, Month, Day)
Why it's wrong here
It does not automatically create columns; you must add them.
- ✓
It enables time intelligence functions like TOTALYTD
Why this is correct
Time intelligence functions require a marked date table.
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