i’m programing a java web application where some fields in jsp require specific characters (remove diacritics).This task is not hard with javascript and a verification method in the servlet side but still possible add the characters if somebody (coworker maybe) forget about the validations.
so i don’t know if is possible add the validation in a area where nobody gonna modify so often like the database.
Depending on your requirements, you might be able to create a trigger to watch for this