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Business System ERD   Create an ERD based on the Crow’s Foot model, using the following requirements: An INVOICE is written by a SALESREP. Each sales representative can write many invoices, but each invoice is written by a single sales representative. The INVOICE is written for a single CUSTOMER. However, each customer can have many invoices. An INVOICE can include many detail lines (INVOICE_ITEM), each of which describes one product bought by the customer. The product information is stored in a PRODUCT entity. The product’s vendor information is found in a VENDOR entity.

Business System ERD   Create an ERD based on the Crow’s Foot model, using the following requirements: An INVOICE is written by a SALESREP. Each sales representative can write many invoices, but each invoice is written by a single sales representative. The INVOICE is written for a single CUSTOMER. However, each customer can have many invoices. An INVOICE can include many detail lines (INVOICE_ITEM), each of which describes one product bought by the customer. The product information is stored in a PRODUCT entity. The product’s vendor information is found in a VENDOR entity.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Business System ERD

 

Create an ERD based on the Crow’s Foot model, using the following requirements:

  • An INVOICE is written by a SALESREP. Each sales representative can write many invoices, but each invoice is written by a single sales representative.
  • The INVOICE is written for a single CUSTOMER. However, each customer can have many invoices.
  • An INVOICE can include many detail lines (INVOICE_ITEM), each of which describes one product bought by the customer.
  • The product information is stored in a PRODUCT entity.
  • The product’s vendor information is found in a VENDOR entity.

 

You do NOT need to put any fields/attributes into this ERD. Just draw the entities as empty boxes with relationships between them.

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