Process Nine Technologies interview questions

I applied for a summer internship during undergrad. One round of interview. Mixed HR and technical background questions. I emailed my resume to the company and the interview lasted for 30 min.

Multiple Rounds. First Round includes Telephonic conversation with tech lead. He asked general dbms, oops questions. Second Round Face to face with VP of the company general questions related to projects you worked previously, dbms questions include query, stored Procedures,functions etc. Third Round Face to face with CTO of the company he do grill down analysis with basic and deep questions. Final Round with HR.