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Question 232 - DP-203 discussion

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You are designing the folder structure for an Azure Data Lake Storage Gen2 account. You identify the following usage patterns:

• Users will query data by using Azure Synapse Analytics serverless SQL pools and Azure Synapse Analytics serverless Apache Spark pods.

• Most queries will include a filter on the current year or week.

• Data will be secured by data source.

You need to recommend a folder structure that meets the following requirements:

• Supports the usage patterns

• Simplifies folder security

• Minimizes query times

Which folder structure should you recommend?

A.
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A.
B.
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B.
C.
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C.
D.
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D.
E.
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E.
Suggested answer: C

Explanation:

Data will be secured by data source. -> Use DataSource as top folder. Most queries will include a filter on the current year or week -> Use \YYYY\WW\ as subfolders. Common Use Cases

A common use case is to filter data stored in a date (and possibly time) folder structure such as /YYYY/MM/DD/ or /YYYY/MM/YYYY-MM-DD/. As new data is generated/sent/copied/moved to the storage account, a new folder is created for each specific time period. This strategy organises data into a maintainable folder structure.

Reference: https://www.serverlesssql.com/optimisation/azurestoragefilteringusingfilepath/

asked 02/10/2024
Alex Tzibosnik
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