What is the difference between PGDM and MBA?

It is good to see that you are looking for further studies in management field. Both the fields are same, but in my opinion MBA gives more practical knowledge then PGDM. If you live in Mumbai, then SP Jain institute is best for PGDM.

The difference between the PGDM and MBA is that former is the Diploma and latter is a Degree course. Although the course structure is same for both and is both are considered equivalent in management course. Many institutes and B-Schools are pro PGDM only.