12cd4ec9_gement_Server__CMS__Repository__Purpose
[Sno] 3 [Physical Table Name] CMS_Aliases6 [Purpose] 
Maps the user alias(es) to the corresponding user ID. For example, a user may have both a Win NT alias and an LDAP alias. Regardless of the number of aliases a user may have, in the BI Platform each user has only one user ID. The map is stored in a separate table to enable fast logins.
The Central Management Server (CMS) Repository
Purpose