title: When to use composite types and arrays and when to normalize a database?
body: <p>Is there any guideline on when to normalize a database or just use composite types and arrays?</p>
  
  <p>When using arrays and composite types, I can use just a single table. I can also normalize the database and use a couple of tables and joins.</p>
  
  <p>How do you decide which option is best?</p>