it's funny you say that. i once had an interview question from a bank saying how would you create a system that can find certain things in large xml documents f

it's funny you say that. i once had an interview question from a bank saying how would you create a system that can find certain things in large xml documents faster than our competitors. I said: "I would use grep" so he asked, what if i also need to find attributes and some other stuff i can't remember. I said: "ah okay, in that case I would use a document store, like eXist" He asked: "but would it be faster than our competitors?" i start thinking how the hell would i know, and said: "i'd get something running, and then think about how we can optimize it afterwards" why the hell would i design a database system from scratch? needless to say he didn't really like what i had to say.