private void FindAlteredColumns(
IEnumerable <Tuple <IProperty, IProperty> > columnPairs)
{
_operations.AddRange(
columnPairs.Where(pair => !EquivalentColumns(pair.Item1, pair.Item2))
.Select(pair => OperationFactory.AlterColumnOperation(pair.Item1, pair.Item2, isDestructiveChange: true)));
// TODO: Add functionality to determine the value of isDestructiveChange.
}