The goal of the OS is to have the minimal support to do it jobs and gets out of the way. Cramming more feature into the OS just increases the complexity unnecessary.
If you need a database, why not just use a database? Why force the solution on the file system?
Microsoft had WinFS 20 years ago that's exactly what you ask for but it never caught on because the complexity in the kernel wasn't worth it.
If you need a database, why not just use a database? Why force the solution on the file system?
Microsoft had WinFS 20 years ago that's exactly what you ask for but it never caught on because the complexity in the kernel wasn't worth it.