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Re:Goodbye MongoDB, Hello PostgreSQL (2015) by twic on Thursday March 11, 2021 @06:12AM (#26422757)
I will pedantically note that in database theory, "relation" is a name for what we usually call a table. You're talking about relationships.

https://en.wikipedia.org/wiki/Relation_(database)

If your data is completely flat, and fits in one table, that's still a relation!

Re:Goodbye MongoDB, Hello PostgreSQL (2015) by bildung on Thursday March 11, 2021 @06:20AM (#26422825)
TIL, thanks :)