The general answer is that you can (of course) use both. But which one is better?
It depends on so many things, your use cases, your current codebase, where is all the data being held, what kind of business inteligence and what kind of statistical information you're into. You'd have to get into much more detail to make a good choice. Perhaps you can even hire an independant consultant who can go with you and analyze your requirements and build a pros and cons for both choices and help you decide.
In any case, the question is really wide just set like that.