You can invoke DEC DATATRIEVE from DCL command level with the
   DATATRIEVE DCL command. The DCL DATATRIEVE command lets
   you specify options to customize your DEC DATATRIEVE session.

   You can abbreviate the DCL DATATRIEVE command to the
   shortest form that is unique among other DCL commands.

   The DATATRIEVE command has the following format:

     DATATRIEVE  [qualifier [...]]  ["dtr-command-string"]

1  –  Qualifiers

   The optional qualifiers to the DATATRIEVE command include
   the following:

   /INTERFACE

 	/INTERFACE = {DECWINDOWS}
 		     {CHARACTER_CELL}

   Specifies the display interface to be used by DEC DATATRIEVE.
   If your default environment is the command-line
   interface, then CHARACTER_CELL is the default. If your
   system is properly defined to invoke the DEC DATATRIEVE
   interface to DECwindows Motif, the default is DECWINDOWS. This
   qualifier overrides the setting specified by the
   DTR$NOWINDOWS logical.

   /DEBUG

 	/[NO]DEBUG

   Specifies whether DEC DATATRIEVE should display special debug
   messages. The default is NODEBUG.

   /NO CDD

   Specifies whether DEC DATATRIEVE should attach to Oracle CDD/Repository
   or use textfile-based dictionary only. When this qualifier is missing,
   the DEC DATATRIEVE behaviour depends on the equivalent string of
   the logical name DTR$ENVIRONMENT: if the equivalent string contains
   /NOCDD , no attachment to Oracle CDD/Repository occurs.
   If DTR$ENVIRONMENT is not defined, the DEC DATATRIEVE behaviour depends
   on the configuration selected at installation time.
   If Oracle CDD/Repository is linked to DEC DATATRIEVE at installation time
   its use can dynamically be disabled using the DATATRIEVE SET NO CDD
   command, which switches to the textfile-based dictionary .

   /VARIANT

 	/VARIANT = image-suffix

   Indicates the 1- to 26- character suffix applied to a
   DEC DATATRIEVE image upon installation to uniquely identify
   that image. This qualifier is needed only if you invoke
   a DEC DATATRIEVE image that was not selected as the default
   image at installation time. The DATATRIEVE command in the
   following example invokes DTR32FMS.EXE:

   $ DATATRIEVE/VARIANT=FMS

   If you want to run DTR32.EXE, and it is not the default
   image on your system, use the /VARIANT qualifier alone, as
   in the following example:

   $ DATATRIEVE/VARIANT

2  –  dtr_command_string

   The DCL DATATRIEVE command can take a DATATRIEVE command
   or statement as an argument. This allows you to execute a
   DATATRIEVE command, statement, or procedure without
   entering interactive DEC DATATRIEVE. If the
   dtr-command-string contains more than one word, it must be
   placed in quotation marks.

   For example, to invoke the DEC DATATRIEVE procedure REPORT
   which is located in CDD$TOP.JOB, you would enter

     DATATRIEVE "EXECUTE CDD$TOP.JOB.REPORT"