Data Redundancy means when the same data is repeated again and again at multiple locations. As a result, deletion, insertion, and updating of the data become a tedious job and also a lot of space is also wasted. Normalization solves this problem by reducing the data redundancy.

There are 3 types of Normalization:-
  • 1st Normal Form
  • 2nd Normal Form
  • 3rd Normal Form
  • BCNF

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