Distributed Name Service (DNS) Management Operations Manual

How to Define DNS Names
Building and Modifying the DNS Database
31258 Tandem Computers Incorporated 4–25
Specific Characteristics for SSOBJECT Names
Names selected for subsystem-object names and their attributes must have the
following characteristics:
The subsystem-object name can be any sequence of characters from the following:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
0123456789#$`@[\]^{|}~./-_
The subsystem-object name cannot be more than 162 characters long.
A subsystem-object name that begins with a backslash character (\) must be a
valid Guardian 90 system name or file name. In this case, the name can be as long
as 35 characters including periods.
Subsystem-object names that begin with a dollar sign ($) must be valid
Guardian 90 file names.
Subsystem-object names that are interpreted as file names are expanded using the
specifications established by the NAMESYS and NAMEVOL commands,
discussed in Section 7.
A subsystem-object name must be unique among object names defined for the
manager.
Subsystem-object names must contain at least one nonnumeric character.
The FORMAT attribute of subsystem-object types can be specified to constrain the set
of legal values of SSOBJECT names for instances of the type. The FORMAT attribute is
discussed in the syntax description of the ADD SSTYPE command in Section 7.
Defining Alias Names Aliases are used for the following possible benefits:
They are often easier to use and remember than subsystem-defined names.
They need not contain addressing information such as the name of a network node
or the subsystem process that controls the object. Therefore you can refer to an
object without knowing its location, and a change in the location of the object need
not affect you.
With various aliases assigned to an object, different users can refer to the same
object by different names. For example, the same terminal might have a name
reflecting its function for the convenience of application users, and another
reflecting its physical location for the convenience of the operations staff. To
define multiple aliases for the same object, you must define alias types, as
described earlier in “Defining Alias Type Names.”