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What Is Data Normalization? #73

Open shuijian-xu opened 5 years ago

shuijian-xu commented 5 years ago

Normalization is a process that aims to eliminate the unnecessary and uncontrolled duplication of data, often referred to as 'data redundancy'.

Normalization enables data structures to be made to conform to a set of well-defined rules. There are several levels of normalization and these are referred to as first normal form (1NF), second normal form (2NF), third normal form (3NF), and so on.