The name of the entity that is the "parent" in the relationship
The name of the field in the related entity that is the foreign key field back to the primary key of the "parent" entity
The value of the primary key field in the parent record. MemberJunction supports composite(multi-field) primary keys. However, foreign keys only support links to single-valued primary keys in their linked entity.
The name of the entity that is the "child" in the relationship
Information about the link between two records