Hierarchical databases, which are often more similar to what we would consider a file system today, predate relational ones by a decade or two.
Hierarchical databases, which are often more similar to what we would consider a file system today, predate relational ones by a decade or two.
The parent comment was pretty explicit in what types of databases it was talking about:
> I should add that the bond between relational databases and spinning rust goes back further.
It's certainly possible I failed to infer the point they were trying to make, but personally I would find it confusing for them to only mention one type of database (relational) and one time period (the 60s) if they actually meant a different type of database or a different time period in their central point of there being a relationship with, in their words, relational databases and spinning rust, in a specific time period other than what the article describes.