Aggregate with a one-to-one relationship

Is there a way for mapping a one-to-one relationship between an aggregate and a regular descriptor according to the class the aggregate is aggregated to?
For example Class A contains Class B as an aggregate. Class B is associated to Class C in a one-to-one relationship. Class A' may also use the same aggregation.
How to specify the table reference so that it is respectively a Table C to Table A database relationship and a Table C to Table A' relationship.
I hope this is clear!?
Please advice,
Chris

If I understand you have a shared aggregate B from A and A' that has a 1-1 relationship to C.
To map this in the Mapping Workbench, first map A, A'. Then map the aggregate B, in mapping its 1-1 to C you should be able to choose any of the foreign keys references in A (or the first descriptor that mapped to the aggregate). You then go into the A and A' aggregate mappings and map the foreign key field in the aggregate to the foreign key field in the source descriptor's table.
If defining the mappings in code you can choose to map the aggregate to either table, or the commonly named fields. If the field names in the source descriptor's table differ, then you provide a field-name translation in the aggregate mapping.

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