title: What is Create User and Create Role in Postgresql?
body: <p>Please explain what is the meaning of Create User and Create Role in PostgreSQL i am new at PostgreSQL.</p>
  
  <p>I try to learn bye myself i understand Create User mean that user who are able to access database cluster and mange it in with in same computer where database cluster is created or from another computer with username and password.</p>
  
  <p>And I think create Role mean which new user i create that user have which kind of role. If i set create role to user that he is not able to change database so he can't. But if i set create role this user are able to change database he can.</p>
  
  <p>Can anyone explain more clearly?</p>
  
  <p>Thanks in advance</p>