How do you enforce relational integrity in database design?

This question helps interviewers assess your technical knowledge and understanding of database design principles, especially regarding relational databases. They want to know if you are familiar with concepts such as primary keys, foreign keys, and normalization, which are crucial for maintaining data integrity. Your response can also indicate your problem-solving approach and ability to implement best practices in database management.

To answer effectively, you should highlight your knowledge of relational database concepts and your experience in applying them. Use specific examples from past projects to illustrate your approach. For instance, "In my previous role, I enforced relational integrity by ensuring every table had a primary key and using foreign keys to maintain relationships between tables. I also applied normalization principles to eliminate data redundancy, which improved data accuracy and consistency, thus reducing the chances of anomalies."