Aliases are stored in one or more tables as part of a database outline. An alias table maps a specific, named set of alias names to member names. When you create a database outline, Essbase creates an empty alias table named Default. If you do not create any other alias tables, the aliases that you create are stored in the Default alias table.
An alias table applies to all members in the outline, although you don't have to provide an alias name for every member unless you need it. You may use up to 56 alias tables if you require more than one name for any members in the outline. A common use of multiple alias tables is for language conversion. Users in different countries can set the appropriate alias table to read the outline in their language.