Both are different from each other as to get seat in B.Tech in CSE (PCM should be there in 12th) you will have to crack private exams like BITs, VIT, SRM, Manipal etc whereas to get admission in BDS (PCB should be there in 12th) you will have to clear NEET. And both the courses are good but better to go for B.Tech in CSE as it has better scope in India and in Abroad as well. So kindly consider your interest and potential before choosing any course.

Hope this helps!!!!