Normalization is the process organizing the data in database. It is the process of successive reduction of a given set of tables to a better form. Let’s start with first normal form.
A database is said to be in first normal form if does not contain any repeating columns or repeating groups of columns.
A table is said to be in first normal form, if it satisfies following conditions:
Let’s take an example of Student table. The table contains information about student hobbies.
Table Student before first normal form
You can see there are many values in Hobby column separated by commas. Thus value in Hobby column is not atomic. As per first normal form (1NF), the value in Hobby column should be atomic in nature.
Table Student after first normal form
Download as PDF
Read next: Second Normal Form (2NF) ››
« Back to Course page
ECGC PO Course 2022
SIDBI Grade A Course 2022
RBI Assistant Course 2022
SSC CHSL Course 2022
DSSSB JE Electrical 2022
Punjab Civil Services 2022
ESIC Deputy Director 2022