IMS (Information Management System) is a program licensed by IBM. It is a
database management and data communication system that is used to manage intricate databases
and terminal networks. IMS enables you to define, reorganize, and load data structures,
and to relate data structures to an application.
With IMS, you can use the high-level language
DL/I (
Data Language/I) to operate on the data that is controlled by the
DBMS. DL/I calls are invoked from application programs written in languages such as PL/I,
COBOL, and C, or by subroutine calls from assembler language programs.