Realtime Database Mapping

I have done the configuration in extconfig.conf file
=> ,<res_.conf class name>[,

eg:- sippeers =>mysql,general,VoipCustomers

This works succesfully.
What i need is two separate tables for voipcustomers and voipproviders.
How can i use realtime mapping in asterisk for doing the same in two tables.

Any help would be appreaciated.

Use a view rather than a table?