1. A data processing system for editing and viewing of a very wide flat file containing more than the number of columns of data adapted to be displayed on a multiple column display screen of a display unit, said system comprising a central processing unit, a random access storage device, a terminal with function key elements and said display unit with said display screen of said display unit being capable of displaying a predetermined number of columns of data in a very wide flat file at one time, and said system including a system editor for operating in an edit mode, a) means for storing data in said random access storage device having a number of columns greater than said number of columns that can be displayed at one time by said display screen, said data being adapted to be viewed in a number of views which are available to said system from a said very wide flat file, b) means for retrieving data from said storage device from said very wide flat file into said processing unit, and c) means for displaying a list of available views in a window on said display screen, means for operating said system editor in the edit mode to edit data to provide a view of said very wide flat file which view has been interactively selected for managing the display of said columns of data from said very wide flat file on said display screen including interactive user operated editing means employing said system editor in connection with a display on said display screen of said terminal for interactive user selection with function key elements of a view of desired columns of said very wide flat file to be displayed including selection of sequences of said columns of data of said very wide flat file to be juxtaposed in the display on said screen, and said system being adapted for working against said very wide flat file prepared without a plural file relational database management system operating on more than one file at a time.