title: Diference between registerColumnType and registerHibernateType
body: <p>I am triyng for the first time to extend an Hibernate dialog (PostgreSQL82Dialect). After reading documentation, I still don't understand.</p>
  
  <p>What is the difference between <code>registerColumnType</code> and <code>registerHibernateType</code>?</p>
  
  <p>Please give some hints?</p>