When designing a table, the second normal form (2NF) is the level of normalization where each column in a table that is not a determiner of the contents of another column must itself be a function of the other columns in the table. At 2NF, modifications are still possible because a change to one row in a table may affect data that refers to this information from another table.
Normalization degrees of relational database tables have been defined and also include:
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