Case study: Library code systems + hierarchies
Hierarchical organized information
A main characteristic of the SfB are the knowledge hierarchies, which are rather flat. New knowledge areas cannot be easily created as would be possible if the hierarchies were scalable. But the system is sufficient for a public library of its size. Another drawback is that due to its flat hierarchy the inventory cannot exceed 300.000 media types.
I compared the SfB to library code systems of other public libraries, and while conducting research I could confirm that the SfB is indeed more user-friendly.
The least user-friendly system (but by far the most scalable) proved to be the Dewey decimal system. It is typically used in university libraries with vast inventory, where the creation of new knowledge areas is necessary.