But useful to name objects in different ways, such as by service
they offer eg Postman Pat, John of Gwent, www.cogs.susx.ac.uk.
Create name using attributes of object.
Note that objects can therefore have multiple names, not all of
which are unique
Choice of name structure depends on system. DNS chooses
partition according to administration of creation, with aliases to
allow naming by service eg ftp.cogs.susx.ac.uk is also
doc-sun.crn.cogs.susx.ac.uk
