ldapv3.pdf 7947KB Apr 17 2013 11:30:42 AM - mirror omadata

Multi-Valued RDNs
While most objects have a single values RDN (cn=Adam Williams) it is
also possible for an object to have a multivalued RDN, where multiple
attributes are compised to make the object unique (much like a composite
primary key in a relational database system).
The attributes of a multi-values RDN are combined using the addition
sign: cn=Adam Williams+relatedDomain=whitemice.org,ou=People,...
Some DSA packages will reorder the elements of the RDN when the
object is stored, this is acceptable as the order of the elements is
irrelevant.
OpenLDAP in particular will sort the attributes of an RDN to be in
alphabetical ascending order.