What creates while a primary key is combined with a foreign, Database Management System

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What it creates while a primary key is combined with a foreign key?

It creates Parent-Child relation ship between the tables that connect them while a primary key is combined with a foreign key.

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What is 2NF? A relation schema R is in 2NF if it is in 1NF and every non-prime attribute A in R is fully functionally dependent on primary key.

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