Difference between Primary key and Foreign key

Hi Dear,

This article we will discuss what is the difference between primary key and

Foreign key. It is also a common interview question. Most of time at interview you will face this question.

Primary key	Foreign Key
Primary key uniquely identify a record in the table	Foreign key is a field in the table that is primary key in another table
Primary Key can't accept null values	Foreign key can accept multiple null values.
We can have only one Primary key in a table.	We can have more than one foreign key in a table