- 
    Type:Technical Work 
- 
    Resolution: Won't Do
- 
    Priority:Critical 
- 
    Affects Version/s: 1.0.0-BETA1
- 
    Component/s: Database, Domain Model
- 
    None
                    Currently variables are associated to DatasetVersions in 2 ways. 
1) A direct foriegn key association.
2) An xref table.
There may be a reason for this, if not we should settle on a single association method.
1) A direct foriegn key association.
2) An xref table.
There may be a reason for this, if not we should settle on a single association method.