Agreed; the same can be said for other fundamentals such as foreign key constraints. I still see modern day apps being developed where foreign keys, and unique

Agreed; the same can be said for other fundamentals such as foreign key constraints. I still see modern day apps being developed where foreign keys, and uniqueness, are only implemented in the application. I understand some protection should be added in the app to prevent errors, but to avoid implementing these constraints in the database itself still leaves the door open for problems to occur.