title: Save large survey in DTO
body: <p>I'm new to <code>jhipster</code> (or more specifically to <code>java</code>) and I have still some problems understanding DTOs. I have a Questionnaire on frontend site with the following structure and I want to save the answers in a DTO.</p>
  <p>Structure:</p>
  <ol>
  <li>Questionnaire: #id</li>
  <li>Question: #id #type</li>
  <li>Answer: #id #value</li>
  </ol>
  <p>So a questionnaire has of course several questions of type: single choice, multiple choice, free text field and file upload. The questionnaire has multiple questions and also might change a few times. We want to save the questionnaire inputs in a DTO to later save it in a database.
  I'm not sure how to implement this as DTO. As far as I saw it on online resources I have to create a <code>inputDTO</code> and an <code>resultDTO</code> coming back to the server, no?
  How can I implement this as an DTO or is there a better way of handling the questionnaire results?</p>
  <p>Thanks for your help!</p>