title: Difference between NESTED TABLE and VARRAY
body: <p>I know basic difference and uses of both. But, what I'm looking for as an answer is, why exactly VARRAY introduced ? </p>
  
  <p>Since, we can do same thing using NESTED TABLE what can be done using VARRAY whereas vice-versa is not possible in some scenario. Also, I have noticed some places people mentioned VARRAY stores elements <strong>in-line</strong>. What does it mean ? Can anyone explain internal storage and processing of both ?</p>