How to bind multiple IDs of different tables to one cell in SQLite?

Question

SQL

There is a database that includes students, teachers and other visitors. How can I combine the IDs of these three tables into one column of the fourth table (for example, "librer's card") and is it possible?

Answer 1

I think we need to look in the direction of polymorphic relationships. For starters, this article will come in handy - https://habr.com/ru/post/261835/