If one has forgotten where they stored a file, then no database will help them either. A file system in the first place is also a database, and whether hierarch

If one has forgotten where they stored a file, then no database will help them either. A file system in the first place is also a database, and whether hierarchical or relational database, they are only as useful as the data they contain and the tools we shot at them. The problems this aims to solve are from the user layer, but the majority of files are used from the system itself. The system does not need such solutions, it's working well with the established solutions. Or is there any research in potential benefits for distributions when using a relational file system, instead of hierarchical ones? Another point is that this would probably bring up new issues. Is there any system with real experience on this that can say what will change, what will be better, what will be worse? But, it's also true that we should improve and innovate this at user level. Having every app separately indexing files and handling them is a poor situation. Working toward a generalized solution would be beneficial. Maybe a universal relational database layer as a foundation for all apps would make sense? Something that can have a tight integration with the Apps, and is on top of the normal file system? Thus, is would be the job of Desktop Environment to offer and integrate this. KDE did try it at some point, but seems to have failed with it for many reasons. Maybe they should restart this, but more pragmatic and enforced, and probably in a fork as a testing ground. I remember that one problem they had, was working on multiple systems in parallel, each limited to certain apps. But there should be only one system, and it must be integrated into every app the same to be successful. KDE with it's centralized, and mature libs would be perfect to enforce this. Gnome might be able to pull something similar, but I don't know how the state of them is today. Of course this would only be a first step, but if some major DE would solve this for them, others could join it, and they could start building an independent solution. And maybe, from there, they could work toward a specialized file system that improves things even more, if really necessary.