Create an ERD based on the Crow$$s Foot model, using the following requirements: $(27$

pts$)$

Below are the business rules that define relationships between entities INVOICE, SALESREP,

CUSTOMER, PRODUCT, LINE, VENDOR.

$1)$ An INVOICE is written by a SALESREP.

Each sales representative $($SALESREP$)$ can write many invoices, but each invoice is

written by a single sales representative $($SALESREP$).$

$2)$ Each INVOICE is written for a single CUSTOMER. However, each CUSTOMER can have

many invoices.

$3)$ An INVOICE can include many detail lines $($LINE$).$ Each invoice line item can only

contain one and only one INVOICE

$4)$ Each PRODUCT can include many detail lines $($LINE$).$ Each invoice line item can

only contain one and only one PRODUCT

$5)$ A VENDOR may supply zero or more products, but a PRODUCT may be supplied by one

and only one VENDOR.

$6)$ The product information is stored in a PRODUCT entity.

$7)$ The product$$s vendor information is found in a VENDOR entity