DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   D
      1. "The Data Language."  MS-DOS 4GL.
      2. A Haskell-like language, with type classes.
      E-mail: <polar@cs.syr.edu>.