Hi, thanks for your contribution, but that’s not quite it.
Let me try to describe the situation to you.
I am developing an application for a school that has 2,000 students. This application aims to pass information to students only. For this, the student would have to make a registration, however, for the completion of the registration the application would check if the registration in question is really of a student enrolls.
In the case I need to create a database with the 2 thousand enrollments of the students and when registering the student informs his enrollment and he the app checks if it is in the database. If not, it blocks the person’s registration. Preventing others who are not students of the school to register.