Should I have a dedicated primary key field?

Question

I\'m designing a small SQL database to be used by a web application.

Let\'s say a particular table has a Name field for which no two rows will be allowed to have the

Answer 1

Yes - and as a rule of thumb, always, for every table.

You should definitely not use a changeable field as a primary key and in the vast majority of circumstances you don't want to use a field that has any other purpose as a primary key.

This is basic good practice for db schemas.