Twilio Software Engineer New Grad interview questions

This was part of campus recruitment. First there was a coding round involving a few questions. On selection from the coding round there were 4 rounds of interviews. Everyone has to attend all 4 rounds and everyone had to do all rounds of interview (i.e. it was not an elimination at a level). The 4 rounds are 2 programming rounds with one easy and next hard questions, 1 round on relational databases and 1 round on companies principles and character.

It was a process of 1 technical test in hakerrank, followed by that 4 interviews, one doing a de twilio Magic, another on database and 2 on coding in hakerrank