Are there any ready-made data warehouse implementations (DBMS + UI) with a tree structure?

Question

Database

Already in several projects I am faced with the need to store data in the form of a tree of elements (with nodes, node properties, etc.)
After the third implementation, the idea arose to implement something universal (library, external subsystem, web service) to simplify the implementation of such bases The principle is simple, there is a database - a tree of elements with certain properties (ideally with a dynamic set). And there is a module (with API) for working with this database (add, delete, tree search, etc.)
Naturally, before proceeding, a question arose. Or maybe someone has already done it?
Google/Yandex search yielded almost no results.
Has anyone come across a similar implementation?

Answer 1

https://habr.com/ru/post/193166/ already in 2013. And so trees and arbitrary sets of attributes have already
been described and implemented thousands of times. You just need to search.
MongoDV put IMHO unnecessary. In most cases it is normally transferred to relational bases.