IGYTCARA: batch application

A company that has several local offices wants to establish employee carpools. Application IGYTCARA validates the transaction-file entries (QSAM sequential file processing) and updates a main file (VSAM indexed file processing).

This batch application does two tasks:

• Produces reports of employees who can share rides from the same home location to the same work location
• Updates the carpool data:
  • Adds data for new employees
  • Changes information for participating employees
  • Deletes employee records
  • Lists update requests that are not valid

The following diagram shows the parts of the application and how they are organized: