title: Hashing VS Indexing
body: <p>Both hashing and indexing are use to partition data on some pre- defined formula. But I am unable to understand the key difference between the two. </p>
  
  <p>As in hashing we are dividing the data on the basis of some key value pair, similarly in Indexing also we are dividing data on some pre defined values. </p>
  
  <p>Can any one please help me out the difference between Hashing and Indexing, and how to decide whether to use hashing or Indexing. </p>