DEC DATATRIEVE Client for Windows is a Windows application
       which provides a user-friendly graphical interface, on Personal
       Computers running Microsoft Windows, for performing DEC
       DATATRIEVE operations on a connected server.

       DEC DATATRIEVE Client for Windows is layered on and requires the
       DEC DATATRIEVE Version 7.1 software which contains the Extended
       Client-Server API and takes care of the client-server connection
       and communications.