Why don’t we write a database file system? Isn’t a file system practically a database already? Isn’t layering an OS between the data and the database application slowing things down?
In: Engineering
The [Pick](https://en.wikipedia.org/wiki/Pick_operating_system) operating system did this in 1965 and through various incarnations adapted by other vendors over the years, it is still in use today in specialized applications.
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