I have a custom table in a 1:N relationship with a virtual table and I noticed that when I deleted the row from the custom table the references to its GUID were not removed from my virtual table. I then noticed that the relationship for delete was Cascade.None
So I tried to create the relationship again setting Delete to 'Remove Link' and got the error:
For Relationships referencing Virtual Entites, Cascade link type must be No Cascade
Why is that? How am I supposed to maintain referential integrity otherwise with a virtual table?