Question

What is default value and null value

Answer 1

default value: The system defined value is known as default value.
null value : The value whose ascii code is 0 is null value.

Answer 2

Answer:

$\Huge\mathtt\pink {Answer⤵}$

Null means that some column is empty or has no value, while default value gives a column some value we don't set it directly in query!!