ng on it will also be deleted (<strong>very dangerous</strong>)</li>
<li>if the row is updated, then the rows depending on it will also be updated</li>
</ul></li>
</ul></li>
<li>If the policy is set to <code>SET NULL</code> or <code>SET DEFAULT</code>, it will replace the FK column(s) values by the <code>null</code> or default value, if possible</li>
</ul>
<h3 id="check-constraints">Check Constraints</h3>
<ul>
<li>Check if an expression before performing an insert or update
<ul>
<li>if the expression is fal