Write any one similarity and one difference between primary key and un

1.	Write any one similarity and one difference between primary key and unique Constraint.
Answer» Similarity: Column with both the constraints will only take unique values. Difference: Column with Primary key constraints will not be able to hold NULL values while Column with Unique constraints will be able to hold NULL values.

Write any one similarity and one difference between primary key and unique Constraint.

Answer»

Similarity: Column with both the constraints will only take unique values.

Difference: Column with Primary key constraints will not be able to hold NULL values while Column with Unique constraints will be able to hold NULL values.

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Write any one similarity and one difference between primary key and unique Constraint.

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