Migration certificate is required if a student registered in a particular University wants to pursue study from a different University. If DAV College, Chandigarh is affiliated to any other University (different from Punjabi University, Patiala), you have to apply for Migration certificate from Punjabi University, Patiala. If DAV College, Chandigarh is also affiliated to Punjabi University, Patiala, then Migration certificate will not be required.
However, please remember that it would be very difficult to take admission in BBA IInd semestar in any other University after taking Migration certificate. So, take suitable decision after thinking the pros and cons.
Non-violence is the greatest Dharma; So too is all righteous violence.