The DATATYPE field attribute clause declares the type and size  of  a
  field.   Some  valid  CDD  data  types  may  not  be supported by the
  languages or language processors you will be using with the CDD.  You
  should  be  certain  that  the  records  you define are valid for the
  language processors you use.

  CDDL accepts TYPE as a synonym for DATATYPE, but the compiler  issues
  a warning when you use TYPE.