On-line inquiry under a small-system operating system
K. Darga · IBM Systems Journal · 1970
The original purpose of the DPS inquiry support-to provide a function that allows inquiries to disk files during stacked-job processing-was surpassed. The DPS inquiry function more generally offers the possibility of starting almost any type of high-priority program during stacked-job processing without aborting the current job in the job stack. This function is offered in a small system with reasonable safeguards to protect the user against mistakes.