First Normal Form (1NF) is the most widely known rule in database normalization. It requires that tables contain no repeating groups and that each column holds atomic values. But, in real-world database systems, developers often intentionally break this rule when modeling complex data. Let’s find out why.
Proper data normalization is a critical concern in database design, controlled by a set of data modeling rules known as the “normal forms”. While even the best developers may struggle to explain the difference between some of the higher normal forms, the one rule we all know is First Normal Form.