Access the foreign key column in the child table.

[wlandgraf (Wagner Landgraf)]

You have to map the association as bidirectional, creating the other side of the association in the TFile class. There you create a Item: TItem association mapping and in the ManyValuedAssociation you modify it to point to that association:

    [ManyValuedAssociation([], CascadeTypeAllButRemove, 'FItem')]
    FFilesList : Proxy<TFilesList>;

It's explained here:

How to Access Parent Entity

You can't. You have to have the child entity. This is because you have to tell Aurelius that one side of the association refers to the other side of the association. You do this by using the MappedBy parameter of the ManyValuedAssociation attribute. This is explained in the ManyValuedAssociation documentation, more specifically this code snipped: Example using MappedBy parameter: TMediaFile = class private [Association([TAssociationProp.Lazy], [])] [JoinColumn('ID_ALBUM', [])] FAlbum…

And here:

Mapping | TMS Aurelius documentation