1) In first round we had written test based on UNIX and SQL queries 2)in second round we had technical discussion. They asked about my project after that HR told we will update you. after one month they called for 3rd round in third round they asked some basics informatica and sql queries. And interview panel were not knowing some basic utilities available in teradata which i felt wonder. They didnt selected me . If they are not knowing then they need to go and find .