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A comment on Satya Nadella uses an IBM AS/400 in 1993. Parent comment

Re:Satya Nadella uses an IBM AS/400 in 1993 by agumonkey on Friday February 16, 2024 @06:06AM (#39395476)
I came into contact with z/OS, VSAM and the likes, but I couldn't see how they did relational queries (joins), all I remember is that every file is row based structured columns that doesn't require parsing (and language integrated in the case of COBOL). What am I missing ?
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Re:Satya Nadella uses an IBM AS/400 in 1993 by tolle on Friday February 16, 2024 @06:36AM (#39395649)
z/OS is their mainframe OS. The AS/400 is something different. Different hardware and different software.
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Re:Satya Nadella uses an IBM AS/400 in 1993 by actionfromafar on Friday February 16, 2024 @07:06AM (#39395838)
The OS/400 operating system ran on AS/400 computers. The successor to OS/400 is the i system:

https://en.wikipedia.org/wiki/IBM_i

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