Hacker News new | ask | show | jobs
by dwolfson20 5399 days ago
This is the field we choose.

Expand your thinking in the abstract about what a database is. As 71104 mentions, a file system is also a database. What you are thinking of as "a database" is really a specific type of key-value store that is located on disk. But the fact most DBs are on disk has nothing to do with the concept itself.