This is usually the domain in which the client resides, though it could also be another domain from which the client often requests services. A client can request a network service within its default domain using the service's simple, unqualified name, that is, without specifying a domain name. Figure 6-6 Default Domains For more information on domain names, refer to Oracle8 Server Concepts . This is no longer a requirement with Net8 and Oracle Names version 8. You may, however, want to keep the same convention to be backward compatible, as well as to avoid having to rename all your databases.
Most networks have one central point of administration, that is, one administrative region.
A region is an administrative name space that defines a population of Names Servers. It is used to divide administrative responsibilities. If you are using Oracle Names and your network is large or widely distributed geographically, you may choose to have several points of network administration. For example, if your network includes both the United States and Europe, you might want to have administrative decisions about the network made locally. To delegate administrative regions, you must use a hierarchical naming model with each administrative region controlling one or more different domains.