A sub-key is assigned according to the primary key.

The non-key attributes (columns) depend on the primary key.

Non-primary key attributes are completely dependent on the composite primary key.

pipelineEventId Long Primary key The trigger's internal primary key.

The chosen candidate key is called the primary key.

Set the primary key using the instructions in the section Set the primary key.

Differences Between a Primary Key and a Unique Key

Key Differences Between Primary key and Unique key

Set the primary key using the instructions in the section Set the primary key.

Remove the existing primary key using the instructions in the section Remove the primary key.

Remove the existing primary key using the instructions in the section Remove the primary key.

Non-primary key attributes are completely dependent on the composite primary key.

It says that every non-prime attribute must be dependent on the whole of a key.

Ans: Primary Key – Primary key is one of the candidate keys.

It reference to primary key of the other relation.