HP 3000 Manuals HP 3000 Manuals
Chapter 6 Multi-user File Handling This COBOL system provides the ability for independent COBOL programs to share data files in multi-user microcomputer environments. Each program running in a shared file configuration can have access to common data files, with file security maintained in a predictable and controllable manner. This chapter describes the facilities in this COBOL system to enable you to create multi-user file handling applications and shows you how to use them. It also describes the sample program available with this system. You specify file sharing using COBOL syntax in your program, rather than with calls to other programs or any other means. The Language Reference contains details of this syntax, and there is further information on COBOL syntax for the various types of file organization later in this chapter. If you are running COBOL in a single-user environment, this multi-user syntax is accepted by the Compiler, although it has no effect when you run your programs. This allows you to develop applications designed for use in multi-user environments in a single-user environment.