Article link:
Diagram:
By: Stephanie Mayes
Summary:
Batch Processing | Online Processing |
· Punched cards submitted thru card reader machine, Job Control Cards with Job Control Language (JCL) – now extinct | · Online program that allows users to enter transactions into the program and get real time results |
· Now coded with an editor and stored on disk | · Online JCL files |
· JCL creates records. JES (Job Entity Subsystem) program will process job based on class and priority | · Started by a system console by an operator. Control regions to control traffic. |
· Once job is initiated, batch processing begins | · To display data it must have a map. This map helps to control region for input transactions for online program |
· The program reads the input files and writes the output files | · Online processing access one or more databases to |
· Errors will terminate jobs | · Results are then transferred to the transaction processing control region |
Mainframe Modernization - This technique leverages the existing assets and makes them more relevant in current business environments. Bell and IBM do this.
Impact on business:
Online processing allows business to be more competitive by having timeliness as a key factor. Online processing is able to access more than one database allowing it to be more efficient. This is a program many businesses have converted to because of the benefits. Batch Processing is an older technology which has slower processing.
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