In the first example, you have to implement the file reading approach now, then the database reading/writing approach, plus a migration script. You did extra wo

In the first example, you have to implement the file reading approach now, then the database reading/writing approach, plus a migration script. You did extra work that you would not have done with the DB-first approach (migration + the initial system that goes to trash) In real life, as projects get more complex, the migration + initial system cost is so high that I'd rather come up with a clean architecture first. Also, it's more fun as a programmer to know that you are not working on a dirty solution. Also, in real life, if we scale up these examples, maintenance cost can be higher for the dirty solution.