Draw an ERD that satisfies the following business rules (note composite entities, weak entities, strong and weak relationships, and cardinalities). An INVOICE is written by a SALESREP. Each sales representative can write many invoices, but each invoice is written by a single sales representative. a. b. The INVOICE is written for a single CUSTOMER. However, each customer can have many invoices. c. An INVOICE may include many detail lines (LINE) which describe the PRODUCTS bought by the customer. d. An invoice LINE references one PRODUCT, and a PRODUCT may be referenced in one or more invoice LINES.

Draw an ERD that satisfies the following business rules (note composite entities, weak entities, strong and weak relationships, and cardinalities). An INVOICE is written by a SALESREP. Each sales representative can write many invoices, but each invoice is written by a single sales representative. a. b. The INVOICE is written for a single CUSTOMER. However, each customer can have many invoices. c. An INVOICE may include many detail lines (LINE) which describe the PRODUCTS bought by the customer. d. An invoice LINE references one PRODUCT, and a PRODUCT may be referenced in one or more invoice LINES.

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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Fundamentals of Managing Data

Data management is creating, organizing, storing and managing the data collected and created by any organization.Effective data management is a crucial part of today's world. Data management provides analytical information on the vast amount of data collected from business applications daily, which helps make critical business decisions and plan and bring out the best strategies.

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4) Draw an ERD that satisfies the following business rules (note composite entities, weak
entities, strong and weak relationships, and cardinalities).
An INVOICE is written by a SALESREP. Each sales representative can
write many invoices, but each invoice is written by a single sales
representative.
a.
b. The INVOICE is written for a single CUSTOMER However, each
customer can have many invoices.
c. An INVOICE may include many detail lines (LINE) which describe the
PRODUCTS bought by the customer.
d. An invoice LINE references one PRODUCT, and a PRODUCT may be
referenced in one or more invoice LINES.
nswer:

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