I chose a project I was confident with and explained its objectives, design, and implementation. I walked through the technical stack I used, the challenges I faced, and how I overcame them. I also highlighted the key outcomes and how the project contributed to solving the problem at hand. However, the interviewer didn't seem too interested in my overall project after that and quickly shifted the focus back to the ER diagrams. From there, most of the discussion centered around modifying and analyzing those diagrams.