Should each and every table have a primary key?

Question

I\'m creating a database table and I don\'t have a logical primary key assigned to it. So, I\'m thinking about leaving it without a primary key, but I\'m feeling a bit guilt

Answer 1

If you are using Hibernate its not possible to create an Entity without a primary key. This issues can create problem if you are working with an existing database which was created with plain sql/ddl scripts, and no primary key was added