Open ServerConnect provides a set of built-in, high-level functions for use in mainframe server applications that communicate with Sybase clients such as Open Client™ applications, third-party tools, and server-to-server programs. These built-in functions are linkable subroutines collectively known as Gateway-Library. Gateway-Library functions are called through a stub in the application program. An Open ServerConnect application program uses a CALL statement to invoke a Gateway-Library function.
You can use Gateway-Library functions with all versions of Open ServerConnect. Minor coding differences exist between CICS and IMS TM. Those differences are discussed in “Differences between CICS, IMS TM, and MVS”.
