Just like the DB Engine, SSAS contains several DMV's you can query for this kind of data.
As a starter open a DMX Query window and run:
SELECT * FROM $System.DBSCHEMA_CATALOGS
SELECT * FROM $System.DBSCHEMA_TABLES
For more information about SSAS DMV's see http://msdn.microsoft.com/en-us/library/hh230820.aspx
[font="Verdana"]Markus Bohse[/font]