Normalization in Oracle PL SQL Interview Questions And Answers For Experience & Freshers | Interview Preparation

Normalization in Oracle PL SQL Interview Questions And Answers For Experience & Freshers | Interview Preparation

Normalization is the process to decompose the table into number of tables. Normalization is used to reduce the duplicate data.


There are two types of Duplicity :

1) Row Level Duplicacy
2) Column Level Duplicacy

Before Normalization insertion, updation, deletion problems occur. By using Normalization we can avoid insertion, updation ,deletion problems.


Types of the normalization:

1) First Normal Form (1NF)

2) Second Normal Form (2NF)

3) Third Normal Form (3NF)

4) BCNF (Boyce Codd Normal Form)

5) Fourth Normal Form (4NF)

6) Fifth Normal Form (5NF)

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