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There are three different Db2 databases.

I believe the mainframe version was first.

There is a version baked into the os/400 operating system (i series).

Then unix/windows Db2 came last, if memory serves.

https://en.wikipedia.org/wiki/IBM_Db2

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I only ever worked with the Linux/Windows variant. I can’t believe I am saying this about an IBM product, but I found it to be actually rather pleasant to work with.
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It’s def got 80’s hacker movie vibes, typing “Iniate log rotation sequence;” etc just screams out for a green terminal emulator.
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You’d never say that if you’ve been on the inside of a mainframe DB2. shudders
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It's very amusing to me that you bring up IBM in a discussion of the value of Oracle.

I came here to say that if you want to understand Oracle's value, think IBM with less history.

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Kind of, but there are some subtle differences in my opinion. Oracle is top-to-bottom evil, whose business model basically boils down to screwing over their clients and everyone else at every possible opportunity, comparable to the likes of McKinsey or Accenture.

IBM is a bit more nuanced. My wife grew up in an IBM town and a lot of her family and her friends’ families used to work there in the 70s and 80s. People, especially the engineers, used to take pride in their work there.

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I think of IBM and GE as being cut from the same cloth back then- they treated their people well and dominated their markets.
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Didn't they famously help both the Nazis and Apartheid South Africa?
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