swl64

If it's a relational database just create another table to handle the hierarchical relationship.It's not that hard and it's really the UI that should do most of the work.

It's called software development.It's not easy, but it's definitely a solvable problem. It's pathetic that they have ignored this basic feature for so long. It's just bad product architecture forcing us into bad information architecture Tags and folders are different constructs. That you can use tags to hack bad product architecture is not the point. Also, the backend database should not dictate how notebooks/stacks/etc are presented to the user. That's a UI-level concern. Just add another column to the database that stores the desired structure. This use case is not rocket science.