Just wanted to add another example of this type of nested relation in the area of project management (as defined by PMBOK):
- A project is a temporary endeavor undertaken by a company or organization (such as the creation of a new product, service, or result)
- A program is a group of projects that are similar or related to one another, and which are often managed and coordinated as a group instead of independently
- A portfolio is a group of different programs and/or projects within the same organization, which may be related or unrelated to one another
Portfolios will be the top layer, but then both programs and individual/stand-alone projects would be nested inside the portfolio. The programs in turn would have some nested projects. I’ve modeled it in Fibery like this:
It would be great to be able to view this type of relation in the UI.