The second normal form is about ensuring that each non-key column is fully functionally dependent on the .

A key attribute in achieving the first normal form is to eliminate groups of data.

A table in first normal form does not contain any repeating groups or of data.

The third normal form is about removing dependencies between columns.

The first normal form is about ensuring each column contains only values.

Second normal form is important as it helps in splitting data into tables to avoid redundancy.