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Exam DP-203 topic 2 question 72 discussion

Actual exam question from Microsoft's DP-203
Question #: 72
Topic #: 2
[All DP-203 Questions]

HOTSPOT -
You are designing an enterprise data warehouse in Azure Synapse Analytics that will store website traffic analytics in a star schema.
You plan to have a fact table for website visits. The table will be approximately 5 GB.
You need to recommend which distribution type and index type to use for the table. The solution must provide the fastest query performance.
What should you recommend? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

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Suggested Answer:
Box 1: Hash -
Consider using a hash-distributed table when:
The table size on disk is more than 2 GB.
The table has frequent insert, update, and delete operations.

Box 2: Clustered columnstore -
Clustered columnstore tables offer both the highest level of data compression and the best overall query performance.
Reference:
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-tables-distribute https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-tables-index

Comments

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Deeksha1234
Highly Voted 2 years, 2 months ago
Hash and clustered columnstore..right
upvoted 12 times
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j888
Most Recent 8 months, 2 weeks ago
Distribution Ideal data Recommended size Hash: Fact tables with join column Large (hundreds MBs - TBs) Round-Robin: Staging tables, no join column Smaller (up to hundreds of MBs) Replicated Distribution: Dimension tables, small references Very small (up to 2 GB)
upvoted 1 times
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Ankit_Az
1 year, 4 months ago
Correct hash and CCI
upvoted 4 times
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objecto
2 years, 4 months ago
I'm not sure about the hash distribution since we don't have enough information on what columns we get. In any case I would choose Round Robin to just have a even distribution.
upvoted 1 times
vctrhugo
1 year, 4 months ago
Anything above 2GB you should go with Hash. Round Robin/Heap is for staging tables.
upvoted 4 times
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henryphchan
1 year, 5 months ago
Round Robin is used for Staging Table
upvoted 1 times
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Revave2
2 years, 4 months ago
I would go with Hash as the table is >2gb and is a fact table...
upvoted 9 times
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