面试题与答案

Customer Information Control System (CICS) is a transaction processing system designed for online processing.

Basic Mapping Support (BMS) map is used to define the layout of screens and messages in CICS applications.

A CICS task represents the execution of a transaction from start to finish, including the processing of one or more units of work.

The Execution Interface Block (EIB) contains information about the current task, including transaction ID and terminal details.

Resource definitions in CICS include files, transactions, queues, and other system objects that programs may access.

A CICS terminal is a device used for user interaction. Terminal Control Program (TCP) manages the flow of control between terminals and CICS programs.

CEMT (CICS Execution Management Transaction) is used for monitoring and managing CICS resources, transactions, and tasks during runtime.

The COMMAREA (Communication Area) is a reserved area for passing data between cooperating programs in a CICS transaction.

EXEC CICS RETURN is used to explicitly terminate a CICS program and return control to the calling program or transaction.

DFHRESP in the EIB contains the response code indicating the success or failure of the last CICS command executed in the program.

Transient data queues (TDQ) are used for temporary storage of data within a CICS region and are typically used for communication between tasks.

The RESP field in CICS contains the response code returned by the last CICS command, indicating the success or failure of the operation.

The CICS EIB contains information about the current execution environment, including transaction ID, program name, and other system-related details.