best scenario Proxy->PI->JDBC for lots of tables in the same interface

i have a question how to make the mapping on my scenario Proxy->PI->JDBC, asynchronous.

i have to transfer the information of 30 tables (catalogs tables) to the DB of SQL server, what is the best way to do the interface, to make this transfer in one interface?

my interface will be execute with a job

Do i need on my Operation Mapping to make one interface with lots of Message Mapping of each table with their respectively Service Interface?.. or am i wrong with it?

or if you have a link where i could fine this best way to make the interface, I appreciate the help.

Regards,

Erick Rodriguez