Tata Consultancy Services Digital Role interview questions

What is cloud computing. What are the different pillers of OOPS

Q1: What was the one thing that they asked you? A1: I was asked to create a Binary Search Tree (BST) and implement functions for insertion and inorder & preorder traversal. Q2: What DBMS-related question did they ask? A2: I was asked about the GROUP BY clause in SQL and other similar operations (like HAVING, ORDER BY) — how they are used and their differences.