first normal form

first normal form (uncountable)

1. (databases) A stage in the normalization of a relational database in which repeating groups and attributes have been eliminated by putting each into a separate table connected by a primary-key/foreign-key relationship.

   Abbreviation: 1NF

• second normal form
• third normal form
• fourth normal form
• fifth normal form
• Boyce-Codd normal form