I would hazard a guess that you are looking to switch from a point-n-shoot to a DSLR and based on the simplistic nature of the question - dont have much clue about DSLR's in general.If so, first learn what a DSLR can do for you,then start looking at models from both ( or even other) brands and then come back with specific questions.
That ...is the long answer to your very short question