title: Practical uses of Seralization Isolation level?
body: <p>Under what scenarios we use SERIALIZABLE Isolation level? I have seen some answers on website that says, when you want transaction to be completely isolated, we usually go for this. </p>
  
  <p>What i would like to know from your own experience is that, when you've used this in your projects/or you've seen this to be used in other projects and what was the specific requirement that was not getting fulfilled by other isolation levels?</p>