What is this magical "high-end" database that operates without the use of any "files"? Certainly not Oracle or Sybase. Sure, they have "data partitions", but

What is this magical "high-end" database that operates without the use of any "files"? Certainly not Oracle or Sybase. Sure, they have "data partitions", but the database executables are distributed and stored in files. And what is the magical file-less operating system that they run on? Ooooh we're in "files are extinct land". Where nothing needs files.