title: What is the right MVC diagram for a web application?
body: <p>Which MVC diagram is correct? Each have different arrows...</p>
  
  <p><strong>Diagram 1</strong></p>
  
  <p><img src="https://upload.wikimedia.org/wikipedia/commons/b/b5/ModelViewControllerDiagram2.svg" alt=""></p>
  
  <p><strong>Diagram 2</strong></p>
  
  <p><a href="https://i.stack.imgur.com/7RXh4.gif" rel="noreferrer"><img src="https://i.stack.imgur.com/7RXh4.gif" alt=""></a><br>
  <sub>(source: <a href="http://blog.stannard.net.au/blog/media/simple-mvc-framework/mvc.gif" rel="noreferrer">stannard.net.au</a>)</sub>  </p>
  
  <p><strong>Diagram 3</strong></p>
  
  <p><img src="https://betterexplained.com/wp-content/uploads/rails/mvc-rails.png" alt=""></p>
  
  <p><strong>Diagram 4</strong></p>
  
  <p><a href="https://i.stack.imgur.com/h6Gz4.gif" rel="noreferrer"><img src="https://i.stack.imgur.com/h6Gz4.gif" alt=""></a><br>
  <sub>(source: <a href="http://java.sun.com/blueprints/patterns/images/mvc-structure-generic.gif" rel="noreferrer">sun.com</a>)</sub>  </p>
  
  <p><strong>Diagram 5</strong></p>
  
  <p><a href="https://i.stack.imgur.com/eSe7V.png" rel="noreferrer"><img src="https://i.stack.imgur.com/eSe7V.png" alt=""></a><br>
  <sub>(source: <a href="http://www.shopno-dinga.com/dustbin/mvc.png" rel="noreferrer">shopno-dinga.com</a>)</sub>  </p>