資料來源 : Free On-Line Dictionary of Computing

data dictionary file
     
         (DDF) A set of files describing the structure of a
        {database} file. DDFs define {database tables} and include
        information about file locations, field layouts and
        indexes. DDFs are the standard method for defining field and
        index characteristics for {Btrieve} files.
     
        (1997-06-03)