MODEL OF DOMAIN NAMING
The simple name of a child in this model is necessarily unique within its parent domain. Since the simple name of the child's parent is unique within the child's grandparent domain, the child can be uniquely named in its grandparent domain by the concatenation of its simple name followed by its parent's simple name. For example, if the simple name of a child is "C1" then no other child of the same parent may be named "C1". Further, if the parent of this child is named "P1", then "P1" is a unique simple name in the child's grandparent domain. Thus, the concatenation C1.P1 is unique in C1's grandparent domain.
Similarly, each element of the hierarchy is uniquely named in the universe by its complete name, the concatenation of its simple name and those for the domains along the trail leading to the naming universe.The hierarchical structure of the Internet naming convention supports decentralization of naming authority and distribution of name service capability. We assume a naming authority and a name server.In reality, anomalies may exist violating the in-tree model of naming hierarchy. Overlapping domains imply multiple parentage, i.e., an entity of the naming hierarchy being a child of more than one domain. It is conceivable that ISI can be a member of the ARPA domain as well as a member of the USC domain (Figure 2). Such a relation constitutes an anomaly to the rule of one-connectivity between any two points of a tree. The common child and the sub-tree below it become descendants of both parent domains.Some issues resulting from multiple parentage are addressed in Appendix B. The general implications of multiple parentage are a subject for further investigationSimilarly, each element of the hierarchy is uniquely named in the universe by its complete name, the concatenation of its simple name and those for the domains along the trail leading to the naming universe.The hierarchical structure of the Internet naming convention supports decentralization of naming authority and distribution of name service capability. We assume a naming authority and a name server.
