About Question enthuware.oce-jpad.v6.2.562 :
Posted: Sun Nov 29, 2020 11:43 am
The statement is ambiguous.The primary key must be defined on the entity that is the root of the entity hierarchy or on a mapped superclass of the entity hierarchy.
In case when mapped superclass is in the middle of entity hierarchy, the primary key should be at the root of entity hierarchy.