title: What exactly is Metadata API?
body: <p>What exactly is <code>Metadata API</code>. I heard this terms many times but I am still not able to understand the concept of it.</p>
  
  <p>I know how to create <code>API</code> in <code>java</code> or <code>javascript</code> but Many times I have been told to explore <code>Metadata API</code> of the <code>application</code> but still I am not able to understand.</p>
  
  <p>Can somebody give an example for the same? is there any public <code>metadata API</code> available?</p>