title: Is there a multivalued field type available in PostgreSQL?
body: <p>I want to know if it is possible to store multiple values in a field in PostgreSQL.</p>
  
  <p>I have a table called <code>Token</code> with the columns <code>id</code>, <code>text</code> and <code>category</code>. <code>category</code> is a multivalued field. Is it necessary to create a separate table for it or is there a way to store it in the <code>Token</code> table?</p>