The ORM Foundation

May a value constraint span multiple roles in ORM?  Examples in the "Big Brown Book" seem to cover only one role.  Consider the below example.  If the example constraint is invalid, might an alternative be to objectify the spanned roles and then apply a value constraint to the objectified type? Best, Matt   

Does any tool (separate from NORMA) exist to check whether a sample population satisfies all constraints in an ORM model? Thanks, Matt

Hello, Is it possible in the latest version of NORMA for VS 2008 to specify a join path for an external uniqueness constraint? The below model produces the following error: "Constraint 'ExternalUniquenessConstraint1' in model 'ORMModel1' requires a join path". I would like to join along the "A rolls up to ...