Question

3. What is Foreign key? How you can establish a link between Primary and Foreign key
explain with the help of an example.​

Answer 1

Explanation:

In a foreign key reference, a link is created between two tables when the column or columns that hold the primary key value for one table are referenced by the column or columns in another table. ... This column becomes a foreign key in the second table. For example, the Sales.

Answer 2

Answer:

In a foreign key reference, a link is created between two tables when the column or columns that hold the primary key value for one table are referenced by the column or columns in another table. ... This column becomes a foreign key in the second table. For example, the Sales.