Follow above wiki , you will get all relevant tables information for all data sources especially SD,MM ,FI.
EKBE and EKPO : 2lis_02_itm and 2lis_02_sgr these 2 are available.
If yo want detail INFO relevant fields availble in these D.S just search in goole
as 2lis_02_itm datasource help.sap.com.
Here u will get details including tables and fields involved including infoobjects/DSO's/Infocubes and either data source supports Full/Delta.
Regards,
Seshu.P