I applied through college or university. The process took 6 weeks.

There were 3 rounds and they were decent. First was a mcq round and it had basic mcqs of dbms,os,cn. The other 2 rounds were coding rounds. In the first round there were three coding questions all 2 from graphs one required basic bfs dfs and the other required floyyd warshall. the thirs question was from trees simple traversal could be done using dfs.

The second coding round was of three hours and it had one question to solve and it was an n-ary tree.

Which data structure can i use to implement a nosql database.