VSE is a multi-programming operating system
which supports multi-processors.
If you wanted to know what this means, you've found the right place!
- The IBM Virtual Storage Extended operating system. VSE, together with VM (zVM)
and OS (zOS) are general purpose operating systems for IBM System/390 and successor
hardware platforms. They form the "zOS Family" and share many common characteristics
- An operating system technique which intends to keep its instruction processor(s)
busy by scheduling other work for a processor when the program it was most recently
running has to wait for completion of an external event, such as an input or output
- An operating system technique which can manage multiple instruction processors,
assigning each to operate upon a different instruction stream (program or job)
- A collection of records serving a common purpose. The PAYROLL FILE would contain records indicating hours worked, pay rate, name, social security and tax information.
- Data Set
- A file by any other name is still a file. Lost in the background of MVS, back in the OS/360 days, they began calling their files data sets.
- A physical record containing potentially multiple logical records. A block of data is read or written from/to external devices (disks, tapes) as a single transfer. VSAM reads and writes Control Intervals, which can be comprised of one or more blocks (or physical records).