我在产品交付表单中有两组输入 -收件人信息(必填)) - (country, state, city, zipcode, street, contact_no)alternate_recipient_information(可选)) - (country, state, city, zipcode, street, recipient name, contact_no)我需要一个高效灵活的数据库模式,以下是我认为可能适合我的模式:userid, name, emailcountryid, country, iso_codestateid, state, country_idcityid, city, state_idaddress_typeid, type1 required2 optionaladdressid, street(null), city_id(null), state_id(null), country_id(null), type_idrecipientid, user_id, address_id, contact_noalternate_recipientid, name, address_id, contact_nodelivery_infoid, recipient_id, alt_recipient_id(null)或者我应该只对必需和可选的数据集使用两个单独的表,还是我可以使用?有没有更好的解决方案?
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