What is @transactional annotation and Where we should be used @transactional annotation ?

 Interview Question from Capgemini ?

Q. What is @transational annotation and Where we should be used @transactional annotation ?

Ans : - 

@transactional  annotation :-

=> The @transactional annotation is used metadata that specifies that an interface, Class or method must have transactional Semantics.

Uses of  @transactional  annotation :-

=> we can use @transactional to wrap a method in a database transaction.

=> It allows us to set propagation, isolation timeout, read-only and rollback conditions for our transaction. we can also specify the transaction manager.