I know I can manually tweak the class files once generated and add inheritance annotations....but what can make DBRE mechanism detect inheritance automatically? Say I have a Dept-to-Employee 1-to-many relation. And also have an Employee table with ContractEmployee and FTEmployee tables in the db...and I want the joined subclass/table per class type of inheritance. Can DBRE differentiate Dept-Employee 1-many relation vs Employee-Contract/FTEmployee subclass relations with some cue? If so what is the cue to be provided in tables?