[Jasper_]

Yeah. There have been multiple projects, even from inside Red Hat, to try to switch away from the text-based Berkley DB to any sort of reasonable database ( one example was razor: https://github.com/krh/razor ), but for a variety of reasons, it was never able to be dethroned.

[Conan_Kudo]

This has finally been done with Fedora 33. RPM has changed from Berkeley DB to SQLite: https://fedoraproject.org/wiki/Changes/Sqlite_Rpmdb