Q1. ER Model . Create an ER Model for the following: A customer (eg. Tom) may (or may not) give references to many other customers (e.g., Mary and Jim). At the same time, the customer (e.g., Mary) who receives a reference may (or may not) give references to many other customers (eg. Lee and Susan). The attributes of the CUSTOMER entity are CustomerID, FirstName, LastName and PhoneNo.

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
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Q1. ER Model . Create an ER Model for the following:
A customer (e.g., Tom) may (or may not) give references to many other customers (e.g., Mary
and Jim). At the same time, the customer (e.g., Mary) who receives a reference may (or may not)
give references to many other customers (e.g., Lee and Susan). The attributes of the
CUSTOMER entity are CustomerID, FirstName, LastName and PhoneNo.
Transcribed Image Text:Q1. ER Model . Create an ER Model for the following: A customer (e.g., Tom) may (or may not) give references to many other customers (e.g., Mary and Jim). At the same time, the customer (e.g., Mary) who receives a reference may (or may not) give references to many other customers (e.g., Lee and Susan). The attributes of the CUSTOMER entity are CustomerID, FirstName, LastName and PhoneNo.
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