FILE I/O

Business Rules differentiates between three different file types: display, internal and external. Each of these file types facilitates different kinds of programming tasks. This section provides a comparison of the different file types and should help you in determining which is the best file type for a particular task.

Communications files are not specifically addressed in this chapter because they are considered a type of display file. For information about the special characteristics of communications files, see the Open Communications statement and the Communications section.

Cross platform I/O is now supported. This means you can read and write data and indexes on both Intel and Risc platforms from either platform. Also see APPENDIX G File Comparison for more information.