level(The name of a set of members in a dimension hierarchy such that all members of the set are at the same distance from the root of the hierarchy. For example, a time hierarchy may contain the levels Year, Month, and Day)
portfolio(A list of projects within an organization that may share common management of scope, budget, or resources); grade(A rank or category assigned to a material resource that denotes functional use but not level of quality. A low-grade resource is not necessarily a low-quality resource)
