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 that stores files as blobs in a database, rather than in a hierarchy of directories. Imagine a web-site with no "directory-like" hierarchy in the URL - just loads of tags and categories and a big "search" field - something like that, only on your hard-drive.

Pros & cons? Ask yourself, how many database filesystems have I ever seen? Do you need to ask more?