My guess is that this is an interview question.
If you know what "drop table" means you know the obvious answer. Outside of an interview or an exam test, I do not see any reason for asking such a question.
Vaidy, is this an interview or exam question? If not (and my guess is incorrect), please describe why you need the answer.
The question is not about testing. It is about databases.
If your leader asked you this question, probably you were supposed to know at least some basics about databases (had you put this in your resume?) and your leader just wanted to verify this. Now, after six days, he must know that you are unable to answer him...