I came into contact with z/OS, VSAM and the likes, but I couldn't see how they d... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		agumonkey on Feb 16, 2024 \| parent \| context \| favorite \| on: Satya Nadella uses an IBM AS/400 in 1993 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 ?

tolle on Feb 16, 2024 [–]

z/OS is their mainframe OS. The AS/400 is something different. Different hardware and different software.

actionfromafar on Feb 16, 2024 | [–]

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

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact