Capgemini Programmer Analyst Trainee interview questions

The questions were based on what I've mentioned on my resume. My resume has C, Python and SQL so here are some of the questions I was asked: - You've used c and python so what are the differences and which is better in your opinion? - What is a list and what is a tuple? SQL: primary key, foreign key, unique key, join, full form of ddl, full form of dml