DP-203 Exam Dumps | You are designing a dimension table in an Azure Synapse Analytics dedicated SQL pool. You need to create

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Question 62/146

You are designing a dimension table in an Azure Synapse Analytics dedicated SQL pool.
You need to create a surrogate key for the table. The solution must provide the fastest query performance.
What should you use for the surrogate key?

A. a GUID column

B. a sequence object

C. an IDENTITY column

Correct Answer: C

Use IDENTITY to create surrogate keys using dedicated SQL pool in AzureSynapse Analytics.
Note: A surrogate key on a table is a column with a unique identifier for each row. The key is not generated from the table data. Data modelers like to create surrogate keys on their tables when they design data warehouse models. You can use the IDENTITY property to achieve this goal simply and effectively without affecting load performance.
Reference: https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse- tables-identity

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