Ask HN: Code should be stored in a database. Who has tried this?

To me it seems obvious that code should be stored in a database rather than a hierarchical, text-based format.

The main way we navigate and organize code is by folder hierarchies. Everyone has a different approach: by feature, by module, by file type (template, component, etc.), by environment (backend/frontend).

Rather than folders and file names, everything could just be tagged in different ways.

Who has tried this and what is the best tool for working like this today?