title: Create a foreign key in SQLite database browser
body: <p>Sorry for novice question.</p>
  
  <p>I have created my tables using <strong>SQLite database browser</strong>, but:</p>
  
  <ol>
  <li><p>I do not know how can I specify my <strong>foreign keys</strong> using the application?</p></li>
  <li><p>How can I create a relationship diagram between tables?</p></li>
  </ol>