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Q . Create an ERD based on the Crow s Foot model, using the following requirements: ( 2 7 pts ) Below are the business

Q. Create an ERD based on the Crows 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 products vendor information is found in a VENDOR entity.
INVOICE entity: INV_NUM (PK), INV_SUBTOTAL, INV_TAX, INV_TOTAL
SALESREP entity: SLSREP_NUM (PK), SLSREP_LNAME, SLSREP_FNAME, SLSREP_INITIAL,
SLSREP_EMAIL
CUSTOMER entity: CUST_NUM (PK), CUST_LNAME, CUST_FNAME, CUST_AREACODE,
CUST_PHONE, CUST_EMAIL, CUST_ADDRESS, CUST_CITY, CUST_STATE, CUST_ZIP_CODE
INV_LINE entity: INV_LINE_NUM (PK), INV_LINE_PRICE, INV_LINE_QUANT, INV_LINE_TOTAL
VENDOR entity: VEND_CODE(PK), VEND_NAME, VEND_CONTACT, VEND_EMAIL
PRODUCT entity: PROD_CODE(PK), PROD_PRICE, PROD_DESCRIPTION, PROD_QOH
In your ERD you should include the following:
1) All entities with their primary keys (PK)(6 pts)
2) All entities with their foreign key(s)(FK)(5 pts)
3) All entities with their attributes (6 pts)
4) All entities with their bi-directional symbols (10 pts)

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