Sollicitatievraag bij Oracle

1st round: DSA:Reverse a Linked list code,Kadane algorithm code. 4 pillars of oops with real life example,What is a Sub class and Super class,Difference between SQL and NOSQL,One SQL Query. 2nd Round: What data structures you have used in your 1st project(to-do list) and their substitutes and what else data structures can be used,Questions related to my 2nd project. DSA:Matric chain multiplication,1 DP question(sol:solved using pick and not pick trick),Polymorphism,What is static and dynamic polymorphism,How is abstract class different from interface and some basic questions from Computer networking. 3rd Round; It was a HR+Technical round. DSA:Mirror of a Binary Tree(I gave hime 2 solutions using a stack(level order traversal) and another function method).By seeing both the solutions the interviewer was a bit impressed. OOPS:What is an abstract class,Difference between Overlaoding and overriding,Contructor and Destructor DBMS:What is Normalisation,Different types of keys etc. Then the interviewer asked me about my hobbies,interests and about my background. Then he asked if I have any plan about higher studies and Would you be able to shift to the mentioned location.