Ph.D

If you have done MBA from a recognized university then you can seek admission in USA universities for Ph.D in subjects related to management. If you have done PGDM you may have to check with targeted USA university where you want to do MBA whether they accept PGDM equivalent to MBA.

Yes, you can get admission in Ph.D program after passing M.Com course with good marks.
Ph.D admission details:
For admission in Ph.D, you have to pass any Master degree in respective stream with minimum 55% marks from any well recognized university. You have to pass an entrance examination organized b

You are eligible to do PhD after PGDM if your degree is approved equivalent to MBA by Association of Indian Universities(AIU). You may look at AIU website to check your PGDM degree equivalence to MBA.

You are advised to do M.Com before seeking admission in Ph.D.

Hi,
For Germany, the best way is to go through their official website as shared here:
https://www.daad.de/deutschland/studienangebote/international-programs/en/?p=d&s=kr&id=3882

The eligibility criteria of Ph.D at IGNOU is M.Phil degree/ a Masters degree in management discipline with minimum 55% (50 percent marks for SC/ ST/ PH candidates) or an equivalent grade from a university or a recognized institution of higher learning. After Ph.D from IGNOU, you are eligible for tea

It is not a problem, combining all these pursuits. Even after joining service, you can complete your research and submission of the thesis. Such instances are in plenty. Go ahead with whatever you desire.

Following institutes offer the same course:
University of Delhi
Indian Institute of Technology, Delhi