All-inclusive, user-friendly and full of helpful illustrations, this work provides a detailed treatment of dBASE IV programming commands, functions, menus, windows, testing and debugging procedures and documentation techniques. The work informs the reader how to create and use: dBASE interfaces; multi-file data entry modules; data validation routines; reports and labels; and password systems. It has been streamlined and updated for the latest version of dBASE IV for DOS, covering the new DOS compiler and including coupons for dBASE software utilities and function libraries.