What is a candidate key in a relation?

What is the first normal form (1NF)?

What is the purpose of a primary key in a database table?

A relation that is in 2nd normal form (2NF) is automatically in which normal form?

What is the purpose of the third normal form (3NF)?

What is the main goal of normalizing a database?

In 2nd normal form (2NF) a table should first satisfy which normal form?