H-1NF

H-1NF, or First Normal Form, is a principle in database design that ensures data is organized efficiently. It requires that each table column contains only indivisible, atomic data—meaning no repeating groups or multiple values in a single field. This structure helps prevent data redundancy and inconsistencies. For example, instead of storing multiple phone numbers in one column, each phone number should have its own record or be stored in a separate related table. Achieving H-1NF makes data easier to manage, update, and query reliably.