Queued Sequential Access Method ⇝

Physical Sequential

<file format>

(PS, QSAM, Queued Sequential Access Method) The simplest data set on an IBM mainframe. Sequential files can only be read or written from the beginning: they do not support random access.

[Why "Queued"?]

Last updated: 2003-12-05

Nearby terms:

physical memory address ♦ Physical Sequential ♦ Physical Transport Network

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