Explained: CICS Link Modules

A CICS transaction arrives. It validates the input, applies some business rules, looks up a customer record, and calculates a result. If all of that logic lived in one monolithic COBOL program, changing the business rules would mean recompiling and redeploying the entire thing. Testing the calculation in isolation would be impossible. Sharing the customer lookup with ten other transactions would mean copying the code ten times. This is why CICS p… Read More