Can I get advice on choosing elective subjects at DS faculty?

Question

big data

Hello, dear forum users. I completed my first year at the DS faculty of the university and it was time to choose elective subjects (you choose what you will teach). I threw in the table what I consider the most necessary, but I would like to hear the opinion of more experienced people. If there is something where I am wrong, please write where and why.

(Green columns are possible items, blue column is my choice)

PS. As I understand it, on DS you can not learn DS at all, but become a super java android developer. How is it possible, I don't know.