If, in computer science (e.g. in a database) you need to create a many-to-many-relationship where the hierarchical order is important, there is ONLY one game in town: Parent-Child. #programming #database #dba #softwareengineering http://talkwards.com/2026/02/28/parent-child-is-the-only-way-to-define-a-hierarchical-relationship-concisely/