SQL Foreign Constraint - Part II -Cannot drop table 'customers' referenced by a foreign key constraint

Hi Babatunde! Thanks for reaching out. Most probably, you are having values in a table that is a child table to the customers table, that are still in use. So, MySQL disallows/prevents the customers table from being dropped namely because of this foreign key constraint. To solve the problem, you should delete the relevant piece of data from the child table that prevents you from dropping customers (which is, obviously, the parent one). Hope this helps.
Best,
Martin