Database Normalisation Questions Medium
The purpose of the first normal form (1NF) in database normalization is to eliminate duplicate data and ensure that each column in a table contains only atomic values.
In 1NF, a table is required to have a primary key that uniquely identifies each row. Each column in the table should contain only a single value, and there should be no repeating groups or arrays of values within a column. This means that each attribute in a table should be indivisible and cannot contain multiple values or sets of values.
By adhering to 1NF, data redundancy is minimized, and data integrity is improved. It allows for efficient data retrieval, updates, and maintenance. Additionally, it provides a solid foundation for further normalization to higher normal forms.