PTC interview questions

Fist they asked me tell me about yourself , then they asked about the projects I had done and then a few OS, DBMS questions. Overall the interview went fine.

the questions were totally on dbms because i was selected by the business intelligence dept. they asked about :- joins,truncate,delete, ddl, dml, dcl how data is stored in the database operations like union difference intersection group by ,having clause a little bit mini project and other project which u have done