about use rdbms database as datasource

[ar...@163.com]

hi
       I  see  the 2.1 release note :
            New Feature
[KYLIN-1351] - Support RDBMS as data source  
         but  in  the documents ,I couldn't find any thing about this ? may i 
get your help?  thanks.

      Best regards  


ar...@163.com