title: req.query and req.param in ExpressJS
body: <h2>Main differences between <code>req.query</code> and <code>req.param</code> in Express</h2>
  
  <ul>
  <li>How are Both different from each other</li>
  <li>When to use then in what cases</li>
  </ul>
  
  <p><strong><em>Suppose a client sends say Android (Key,value) pair in the request ........ which one to use ?</em></strong> </p>
  
  <p><strong>[EDIT]</strong></p>
  
  <p>Suppose android sends a POST  request -> Intention is to send (Key,Value) to client and the server should perform a database query based on the value in the server and return JSON response</p>
  
  <p><strong>Look:: at this question for the program i referenced:</strong>: <a href="https://stackoverflow.com/q/18515313/2582071">Simple Express program for querying a result</a></p>