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Those enterprises that I mentioned often not only maintain their current workloads on AIX but even add new environments to it. An example: an internal strategy defines that every m…

AIX is still the go-to platform for a bunch of financial institutations (banks and insurance companies). Although there are a lot of companies within that sector that slowly move t…

Exactly. db2set DB2_COMPATIBILITY_VECTOR=ORA gives you Oracle compatibility. You can even get MySQL compatibility and I have actually used that once in the past.

Yes, EDB's Advanced Server provides that: https://get.enterprisedb.com/docs/Database_Compatibility_for... (pp. 30 ff.).

As always: it depends. For some workloads something like Citus [1] might allow you stay within the PostgreSQL ecosystem even when you are trying to do OLAP. [1] https://github.com/…

Agree. Here is a list of the limitations: https://github.com/citusdata/citus/tree/main/src/backend/col...

That's fascinating. I did basically the exact same thing after joining Mastodon a couple of weeks ago and used an identical tech stack (Python Lambda as well as DynamoDB on AWS). B…