A domain name must be unique for all domains defined in the database and can contain a maximum of 64 case-insensitive characters from the following restricted character set:
The domain name can also be the empty string (
""), which is reserved in OpenEdge. The empty string (
"") is the value of the default (blank) domain name that OpenEdge pre-defines in every OpenEdge database. In addition, OpenEdge pre-configures and reserves additional domains whose names you cannot use to configure your own domains. For more information on these pre-configured and reserved domains, including the default domain, see
Pre-configured and reserved OpenEdge domains.