Use unnamed row types to create a customer table containing columns cust_ no, cust _ name and cust_ address, where cust_address comprises street, town and postcode fields, and postcode consists of the...

Use unnamed row types to create a customer table containing columns cust_ no, cust _ name and cust_ address, where cust_address comprises street, town and postcode fields, and postcode consists of the subfields area_code and locality_code.

State an advantage of using a named row type, rather than an unnamed row type, for an address attribute.