| Batch Processing |
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Batch jobs are set up so they can be run to completion without human interaction, so all input data is preselected through Script s or Commandline Parameter s. This is in contrast to interactive programs which prompt the user for such input. Batch processing has these benefits:
Batch processing has historically been associated with Mainframe computers. Since this class computer was so expensive, batch processing was used for the reasons listed above. Also, in the early days of electronic computing, interactive sessions with Computer Terminal interfaces and later Graphical User Interface s) were not yet widespread. Batch processing has grown beyond its mainframe origins, and is now frequently used in UNIX environments, where the Cron and At facilities allow for scheduling of complex job scripts. Similarly, Microsoft DOS and Windows systems refer to their command-scripting language as Batch File s and Windows has a Job Scheduler . A popular computerized batch processing procedure is printing. This normally involves the operator selecting the documents they need printed and indicating to the batch printing software when and where they should be output. Batch processing is also used for efficient bulk database updates and automated Transaction Processing , as contrasted to interactive Online Transaction Processing (OLTP) applications. |
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