MCA eligibility is university-specific. A bachelor's degree is normally required, while mathematics or a computing background can be an additional condition for some programmes. The practical value of MCA without BCA becomes clearer when you use it to solve an actual problem instead of studying definitions alone. This point is specifically relevant to the MCA without BCA aspect of MCA study. For this specific question about MCA without BCA, the practical takeaway is to relate the concept to your own MCA learning goal.