3 ms·

> That is, unless there exists some kind of tree structured database that I don't know about ... Believe it or not, hierarchical databases were actually quite

> That is, unless there exists some kind of tree structured database that I don't know about ... Believe it or not, hierarchical databases were actually quite popular once upon a time, mostly in IBM mainframe land as I understand it. Today the Windows registry is a hierarchical database in common use.

Joker_vD 5y ago
And Codd's invention of RDBMS killed those very successfully... until we reinvented them , first with XML, second with NoSQL, and rediscovered, again, why the relational databases were such a huge success and adopted with such enthusiasm.
PaulDavisThe1st 5y ago
Rather more common that the Windows registry: any kind of filesystem.