title: Is it possible to have complexType and elements inside but without the sequence part
body: <p>I hava a xml doc (and complex element) that is similar to this example:</p>
  
  <pre><code>&lt;xs:element name="employee"&gt;
   &lt;xs:complexType&gt;
    &lt;xs:sequence&gt;
     &lt;xs:element name="firstname" type="xs:string"/&gt;
     &lt;xs:element name="lastname" type="xs:string"/&gt;
    &lt;/xs:sequence&gt;
   &lt;/xs:complexType&gt;
  &lt;/xs:element&gt;
  </code></pre>
  
  <p>But in my xml it shouldn't matter if I add firstname or lastname first. 
  So I would like to remove the "xs:sequence" part but I am not sure what I should replace it with. </p>
  
  <p>If it is not possible - then why is it not possible?</p>
  
  <p><strong>Update:</strong> 
  If I change it with &lt; cx:all> I get this error: "The {max occurs} of all the {parties} of an all group must be 0 or 1".</p>