Recording 3 4 5 6 10 11 12 13 The following figure shows an ER diagram for a publisher. Transform the ER diagram to a set of relations and develop a relational schema. b. Show the primary keys, foreign keys and referential integrity constraints. See the example below about how to specify the elements of your relational model verbally. You need to write down the following information 18 19 20 4 25 26 27 Example: Customer_t(CustomerID PK. Address, City, State, zip) ORDER [Orderid PK Date, CustomerID FK) Customers in order t references Custoemrld in Customer_t ROYALTY CHECK Check No Check Date Check Amount PUBLISHER Pub Name Pub Mailing Address Pub Phone BOOK Book ISBN Publishes Book Title Book Price Book Nbr Pages AUTHOR Author ID Writes Author Name Author Address ROYALTY RATE A B TEE E E 7 1