Create an ERD based on the Crow’s Foot notation 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 (LINE), 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
Create an ERD based on the Crow’s Foot notation 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 (LINE), 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
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Create an ERD based on the Crow’s Foot notation 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 (LINE), 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
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