Amazon Business Intelligence Engineer I interview questions

I received an email from recruiter for Business Intelligence Engineer role with Amazon World Wide Services group. Nearly a month after the first email, first round of interview was set up. It was a mix of behavioral and basic technical questions. In behavioral, the interviewer literally mentioned 3 Amazon leadership principles and asked me to tell how I implemented them. Then two basic technical qs - explain join and primary key in layman terms. I did not get call for next rounds.