Neo4j can be a useful supplement to apps that have data models that include graphs.

If you are using relational db you can use recursion to achieve the same effect without having bring n4j and cipher into your stack.

A simple example of implementing a hierarchical graph data structure on postgres and exposing it via graphql can be found on the hasura blog.

https://hasura.io/blog/authorization-rules-for-multi-tenant-...