Deprecated feature: Creating an XML file to use internal-alias ID resolution
When using internal-alias resolution, an alias is substituted in
place of the primary key (identifier) in the XML document. This alias is then
used elsewhere in the XML file to refer to that element. This eliminates the
need to know the unique indexes necessary to build the XML file. Internal
aliases must be used consistently throughout the file. If an address-book
ID ADDRBOOK_ID is aliased to @addrbook_1, all foreign-key references to that
ID in the file must use @addrbook_1. Note that aliases are transient. They
are not saved; and they cannot be used in a separate XML file without introducing
the aliases again.