CICS - Customer Information Control System

1) CICS is an Online Transaction Processing System

2) CICS acts as an Interface b/w Application software and z/os.

3) CICS is an Database / Datacommunication control system.

CICS Introduction:

Macro level CICS - Initial version assembler macro to request CICS services.

Command level CICS - High level language version, commands to requests CICS services.


What is CICS ?

CICS is a transactional subsystem of z/os that can,

1) Run online applications.
2) Run same time, many users, same applications.
3) Manage the sharing of resourcing
4) Ensure integrity of data (Correctness of data).
5) Prioritize execution withfast response.