private void FindAddedUniqueConstraints(
Tuple <IEntityType, IEntityType> tablePair,
IEnumerable <Tuple <IKey, IKey> > uniqueConstraintPairs)
{
var pk2 = tablePair.Item2.TryGetPrimaryKey();
_operations.AddRange(
tablePair.Item2.Keys.Where(k => k != pk2)
.Except(uniqueConstraintPairs.Select(pair => pair.Item2))
.Select(uc => OperationFactory.AddUniqueConstraintOperation(uc)));
}
