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Apr 23,  · Second Normal Form (2NF): A relation is said to be in second normal form when it is already in first normal form and there is no partial functional dependency that is no non-prime attribute should be functionally dependent on prime attribute. It was given by E.F Codd in Estimated Reading Time: 3 mins. Jul 03,  · The second step in Normalization is 2NF. A table is in 2NF, only if a relation is in 1NF and meet all the rules, and every non-key attribute is fully dependent on primary key. The Second Normal Form eliminates partial dependencies on primary keys. Feb 08,  · Second normal form (2NF) is a normal form used in database normalization. A relation is in the second normal form if it fulfills the following two requirements: It is in first normal form. It does not have any non-prime attribute that is functionally dependent on any proper subset of any candidate key of the relation. Read more