extends|corporate_customer_typ|not_applicable|oe.customer_typ
field|customer_id|not_applicable|number(6)
field|cust_first_name|not_applicable|varchar2(20)
field|cust_last_name|not_applicable|varchar2(20)
field|cust_address|not_applicable|cust_address_typ
field|phone_numbers|not_applicable|phone_list_typ
field|nls_language|not_applicable|varchar2(3)
field|nls_territory|not_applicable|varchar2(30)
field|credit_limit|not_applicable|number(9,2)
field|cust_email|not_applicable|varchar2(30)
field|cust_orders|not_applicable|order_list_typ
field|account_mgr_id|not_applicable|number(6)