What is a database file system?

Question

I have a very little idea about what database file system is.

Can somebody out here explain to me what actually a database file system is, and what its applications are?

Answer 1

It's a file system where files have significant amounts of metadata. For example, the iTunes library might count as a database file system; not only do you have files on disk and know where they are, but you have tags (genres) and other metadata like author (artist).