I am not able to understand why are we using dot in between

Answer 1

Dot in between what?

Answer 2

Vasudha Shweta you use the dot in SQL to reduce the ambiguity when your resultant is a combination of two tables.

For example if you have two tables both having an ID column then if you write a query mentioning just the column name then you are not sure that which ID is returned in your result.

Hope it will make sense now.
https://www.sololearn.com/learn/SQL/1865/

Answer 3

Understood Thank you