UtilityTierType

Tiers within this domain network are hierarchical. In hierarchical domain networks, tiers are nested within one another, so features existing in subnetworks for a lower tier naturally participate in all higher tiers. For example, in a gas network, a valve isolation zone is within a pressure zone, which in turn exists within a system zone. A feature in the isolation zone also exists in the pressure zone and in the system zone.

Tiers within this domain network are partitioned. Features in partitioned domain networks only exist in one tier. The relationship between tiers is ordered and linear. Features can exist in one or multiple subnetworks within one tier.