Tuxedo is a good example of this type of system. Code interacting with Tuxedo generally written in Cobol but libraries would be available in other languages lik

Tuxedo is a good example of this type of system. Code interacting with Tuxedo generally written in Cobol but libraries would be available in other languages like C. To start to understand this, think of a world where * http and webservers do not exist * sql and databases do not exist * ram is measured in kilobytes * storage measured in megabytes * there is network connectivity but tcp/ip is not pervasive and there is no dns * files exist and there are myriad wonderful binary data storage formats There are so many other weird things but best just to dig into the docs: https://docs.oracle.com/cd/E72452_01/tuxedo/docs1222/pcb/pbint.html https://docs.oracle.com/cd/E72452_01/tuxedo/docs1222/pcb/pbi...