Solved: Database migration: How can I make a relational database ?

🚀 Executive Summary TL;DR: Database migrations can inadvertently disable foreign key constraints, leading to a relational database that lacks enforced data integrity and behaves like a spreadsheet. This critical issue often stems from silent failures during the re-enabling of constraints after data import. Solutions range from quick manual fixes to systematic programmatic corrections using database metadata, or a complete re-migration with a schema-first approach and cleaned data. 🎯 Key Takeaways Database dump and restore utilities frequently disable foreign key constraints for faster data imports, making silent failures during re-enabling a common cause of post-migration data integrity issues. The INFORMATION\_SCHEMA in databases like MySQL/PostgreSQL can be leveraged to programmatically identify missing foreign key constraints and generate ALTER TABLE statements for systematic correction. Applying foreign key constraints to large, active tables can cause significant database locks an