title: How to design the multiple choices element in xml schema?
body: <p>For example, I want to create an element <code>Title</code> containing 3 choices: <code>Mr.</code>, <code>Mrs.</code>, <code>Miss</code>, so that users can only choose one of them. How can I do that?
  Is this something like:</p>
  
  <pre><code>&lt;xs:complexType name="Title"&gt;
      &lt;xs:sequence&gt;
          &lt;xs:choice maxOccurs="unbounded" minOccurs="0"&gt;
          Mr.
          &lt;/xs:choice&gt;
          &lt;xs:choice maxOccurs="unbounded" minOccurs="0"&gt;
          Mrs.
          &lt;/xs:choice&gt;
          &lt;xs:choice maxOccurs="unbounded" minOccurs="0"&gt;
          Miss
          &lt;/xs:choice&gt;
     &lt;/xs:sequence&gt;
  &lt;/xs:complexType&gt;
  </code></pre>