Reference by two keys
We can have situation like this:
model | property | prepare | ref |
---|---|---|---|
T1 | |||
p1 | |||
p2 | |||
a1 | p1, p2 | T2 | |
T2 | a2 | ||
p3 | |||
p4 | |||
a2 | p3, p4 |
Here, T1 reverences T2 model via a1 property. a1 and a2 both are auxiliary properties, combining two other model properties. Whole this makes a composite primary key and a reference through a composite key.
Edited by Mantas Zimnickas