Unique Key Constraint In SQL Server | Coding Knowledge
In this session, I will show you details about the Unique key constraint in Sql Server and in which case you choose Unique key constraint over Primary key constraint.
In this session i describe the below details:
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1. Define Unique key constraint
2. Difference between Primary key constraint and Unique key constraint
3. When do you choose Unique key constraint over the Primary key constraint and why
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