title: Using an Array in author_id int references user(id)
body: <p>On <a href="https://github.com/calebmer/postgraphql" rel="nofollow">https://github.com/calebmer/postgraphql</a> the author shows a schema:</p>
  
  <pre><code>create table post (
    id serial primary key,
    author_id int non null references user(id),
    headline text,
    body text,
    …
  );
  </code></pre>
  
  <p>How would I have to rewrite the schema if I would like to cite multiple authors and reference them using an <a href="https://www.postgresql.org/docs/9.1/static/arrays.html" rel="nofollow">array</a>?
  Would it be: <code>author_id int[] non null references user(id)</code>?</p>