Answers for "3. 4. What are the differences between primary key and unique key in SQL Server?"

difference between unique vs primary key in sql

What is the difference between UNIQUE and PRIMARY KEY constraints? 
There should be only one PRIMARY KEY 
in a table whereas there can be
any number of UNIQUE Keys.
PRIMARY KEY doesn’t allow NULL
values whereas Unique key allows NULL values.

Posted by: Guest on December-23-2020

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Answers for "3. 4. What are the differences between primary key and unique key in SQL Server?"

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Answers for "3. 4. What are the differences between primary key and unique key in SQL Server?"

Code answers related to "3. 4. What are the differences between primary key and unique key in SQL Server?"

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