What is the purpose of creating a primary key in a database

Basically it creates a unique identifier for each row in your table and that can help you link your table to other tables using primary key as link

Explanation:

"Primary key allows you to create a unique identifier for each row in your table. It is important because it helps you link your table to other tables (relationships) using primary key as links."

no, it just either gets automatically 5 points to give away, or u can choose how many points u want to give but, the answerer only gets half

the answer is e ; )(: