Is there any good course in artificial intelligence for my friend who has done BSc Data Science and wants to move to Germany?

Yes, your friend with a BSc in Data Science is eligible for strong Master's programs in Artificial Intelligence (AI) in Germany.

Top options include:
- University of Mannheim: Mannheim Master in Data Science, focusing on machine learning and AI.
- Saarland University: Data Science and Artificial Intelligence (M.Sc.), offering a blend of theoretical and practical AI training.
- University of Stuttgart: Artificial Intelligence and Data Science (M.Sc.), emphasizing analytical and technical skills.
- ESMT Berlin: Master in Analytics & Artificial Intelligence, with a business and analytics focus.
- Frankfurt School of Finance & Management: Master of Artificial Intelligence & Data Science, for those with strong math backgrounds.
- Furtwangen University: AI and Data Science for Digital Business Management (M.Sc.), combining AI with business applications.

Admission typically requires a relevant bachelor's degree and proof of English proficiency (such as IELTS/TOEFL). Tuition fees and deadlines vary by university and are subject to change.