Demonstration application

This tutorial uses the demonstration application JCL supplied with your COBOL development system. The JCL application performs four functions:

1. Uses the IDCAMS mainframe utility to delete from the catalog the data set created earlier, if it is already there.
2. Runs a COBOL program that writes a simple data set, which is added to the catalog.
3. Uses the IEBGENER mainframe utility to create a temporary data set.
4. Runs a COBOL program that reads through the data set created in step 3 and displays it.