via which tables do I get the Column(EMI number) in table_emi_emi to the Table_EMI_Order

Hello ALL, i was asked to find the tables through which EMI Number can be taken. there was a cloumn "EMI_number" in table_EMI_EMI. now i need to know how to get this column to the another table table_emi_order via what all tables. please help me how to find this. the ticket was raised like this: via which tables do I get the EMI number to the Table_EMI_Order?