To ace your DBMS interview, focus on mastering critical questions that interviewers frequently ask. These questions often cover database design principles, such as normalization and denormalization. Expect to discuss different types of keys and their roles in maintaining data integrity. You should be comfortable writing and optimizing SQL queries, as this is a key skill for any database professional. Questions on indexing strategies, transactions, and concurrency control are also common. Additionally, be prepared to discuss database security practices, such as encryption and access control. Demonstrating your hands-on experience with these concepts will highlight your suitability for the role.