title: Difference between @NamedQuery and @NamedNativeQuery in JPA-EclipseLink
body: <p>Hi I am a newbie using persistence API, and have also read few posts related to the same and got a very few understanding between these two. the below post really helped me clear my concepts for @NamedQuery
  <a href="https://stackoverflow.com/questions/4517069/what-is-a-named-query">What is a named query?</a> I now wanted to learn all the important key differences between NamedQuery and NamedNativeQuery, and which one is preferred most while dealing with JPA-QL, and performance wise.</p>
  
  <p>Thanks!</p>