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There are no primary or candidate keys in the referenced table 'Card' that match the referen...

Weak Entity postgresql...

Partial Keys in a Weak Entity Set...

How can a weak entity be related to weak entity?...

Hibernate autoincrement ManyToOne weak entity...

SQLite: Insert into weak entity table (or how to get the just-inserted defining entity's ID)...

Creating SQL Tables based on ERD with two Weak entities...