Question: A foreign key is defined as a minimal super key that is new that does not contain subset of attributes that is itself a super

A foreign key is defined as

a minimal super key that is new that does not contain subset of attributes that is itself a super key.

an attribute (or combination of attributes) that uniquely identifies each entity in a table.

a key that is used strictly for data retrieval purposes.

an attribute (or a combination of attributes) in one table whose values match the primary key in another table or whose values must be null.

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