Frida has been given the task of creating a database to store all her company's records and sales records. She is going to produce a relational database. The customers records will have the fields Customer_id, Name, Contact_Phone, and card Number. The sales records will have the fields Invoice_number, Item_number, Item_description, Item_cost and Customer_ref.

Complete the diagram below to show how the tables will be combined.

Frida has been given the task of creating a database to store all her companys records and sales records She is going to produce a relational database The custo class=