Both MSc in data science and a postgraduate diploma (PGDM) in data science are courses that an individual undertakes after the completion of their undergraduate or bachelor’s degree. The core difference lies in the credits that these courses offer, the duration, and the specialization that students can opt for. The master’s degree is a full-time course with 180 credits. The PGDM is a part-time course with 120 credits. While both are specialization courses, the PGDM focuses on improving skill sets.