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Exam DA-100 topic 1 question 13 discussion

Actual exam question from Microsoft's DA-100
Question #: 13
Topic #: 1
[All DA-100 Questions]

You have a large dataset that contains more than 1 million rows. The table has a datetime column named Date.
You need to reduce the size of the data model without losing access to any data.
What should you do?

  • A. Round the hour of the Date column to startOfHour.
  • B. Change the data type of the Date column to Text.
  • C. Trim the Date column.
  • D. Split the Date column into two columns, one that contains only the time and another that contains only the date.
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Suggested Answer: D 🗳️

Comments

Chosen Answer:
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DeathCaliberKnight
Highly Voted 3 years, 12 months ago
the answer is correct , its always better to separate date and time
upvoted 59 times
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ThaboS
Highly Voted 4 years ago
D - Is the correct answer
upvoted 22 times
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Samuel77
Most Recent 2 years, 8 months ago
D is the correct answer
upvoted 1 times
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TrevorK
2 years, 8 months ago
D reduces cardinality
upvoted 2 times
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NUYO
2 years, 8 months ago
D all the way
upvoted 1 times
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knigmich
2 years, 9 months ago
D for sure
upvoted 1 times
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pimni
2 years, 9 months ago
the answer is correct
upvoted 1 times
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dmnantilla9
2 years, 12 months ago
D is Correct, because one other information in Date like time makes the process slower to identify unique patterns
upvoted 1 times
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vineyvinni
3 years ago
Selected Answer: D
The best thing is date and time to be separate columns
upvoted 1 times
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PowerBIAddict
3 years, 1 month ago
D is correct. It keeps the data and reduces size as we have less unique rows.
upvoted 1 times
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TechDiva
3 years, 1 month ago
I got it on my exam 03/17/2022. 90-95% questions were from here.
upvoted 3 times
Darhmiee
2 years, 9 months ago
Hi.......Pls do you have the complete exam package
upvoted 1 times
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Letsgo9999
3 years, 1 month ago
In exam 07-03-2022
upvoted 1 times
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battenarajesh
3 years, 3 months ago
C is correct
upvoted 1 times
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Ajitk27
3 years, 3 months ago
Yes, D seems to be the correct answer.
upvoted 1 times
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creditiridium
3 years, 4 months ago
Selected Answer: D
D is correct
upvoted 2 times
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kwanalytics
3 years, 4 months ago
On exam Dec 27, 2021 - answer D
upvoted 1 times
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DatBI
3 years, 4 months ago
Selected Answer: D
D is correct, the best practice is to split date and time to reduce size
upvoted 1 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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