What is normalization?
Normalization is basically to design a database schema such that duplicate and redundant data is avoided. If some piece of data is duplicated several places in the database, there is the risk that it is updated in one place but not the other, leading to data corruption.
purpose of the normalisation of databases is to improve the quality of data through the elimination of redundancy. The maintenance and upkeep of normalised data is a very simple process.
There is a number of normalization levels from 1. normal form through 5.normal form. Each normal form describes how to get rid of some specific problem, usually related to redundancy.
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