Question

difference between primary key and foreign key

Answer 1

heya frnd
here is ur answer

A primary key is a column or a set of columns that uniquely identify a row in a table. ... Usually a foriegn key is in a table that is different from the table whose primary key it is required to match. A table can have multiple foriegn key. The primary key cannot accept null values.

I hope it may help u
ThnQ
pls mark me brainliest
.
.
.