First normal form (1NF) is the most basic level of database normalization defined by English computer scientist Edgar F. Codd, the inventor of the relational database. A relation (or a table, in SQL) can be said to be in first normal form if each field is atomic, containing a single value rather than a set of values or a nested table.
First normal form (1NF) is the most basic level of database normalization defined by English computer scientist Edgar F. Codd, the inventor of the relational database. A relation (or a table, in SQL) can be said to be in first normal form if each field is atomic, containing a single value rather than a set of values or a nested table.
Source: Wikipedia "First normal form" · CC BY-SA 4.0
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