Are there ways to make one-to-many (abstract) relation without using SQL foreign keys?
I know it could be made by joining 2 non-related tables. But is it possible to use EF Core default navigation tools?
I think you want that because you can't add a foreign-key to your entity
So, you can solve that so:
You have a entity
and you want a
but your User can't be assigned to one group. So you create a
entity which has a foreign key for the
and a navigation property to the User
This is called a many-to-many relationship