Did you work on creating the project from scratch or did you use an existing database?

Yes, I have worked on creating projects from scratch as well as with existing codebases. When creating from scratch, it's important to design the architecture and structure of the project correctly, and choose appropriate technologies and tools. When working with an existing codebase, I study the current code, understand the logic and standards, and then carefully make changes or add new features to avoid disrupting stability.