OS/390 CICS/ESA Concepts 
This course explains the basics of the
Customer Information Control System (
CICS). It focuses on the single-system environment but also discusses
CICSplex and other CICS intercommunication facilities. CICS is
IBM's general purpose online transaction processing (
OLTP) software, which is used by many organizations to handle transaction processing needs. Some topics discussed in this course are
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