You specified a default value for <str> which is inconsistent
  with its data type

  Explanation:  The value specified for the default value must
  have the same type (i.e.  both character, both exact numeric,
  both approximate numeric or both dates) as the column or domain
  for which it is the default.  It must also be small enough to
  fit into column or domain.

  User Action:  Replace the specified value with a value that is
  compatible with the column.