Hello aspirant

Not all colleges provide data entry as vocational subject. Some colleges offer this facility otherwise it a training program which is included in operations of computer Technology.

But courses are also there only to learn data entry skills

Hello,
.
Yes, data entry is a vocational subject. Students can switch there course in college itself if the college is providing vocational subject. If not you can get to the nearby coaching centers or institutes for Pershing this course. Data entry is 6 to 12 months  course and depending on your daily performance course will be completed more earlier