You are given an E-R diagram with two entities,ORDER and CUSTOMER,as shown above,and are asked to draw the relationship between them.If a given customer can place many orders and a given order can be placed by one or more customers,which of the following should be indicated in the relationship symbol between the two entities?
A)0:1
B)1:1
C)1:N
D)N:1
E)N:M

Question

Quizplus · Accepted Answer

The relationship described is many-to-many (N:M) because a customer can place many orders and an order can be placed by multiple customers.

You Are Given an E-R Diagram with Two Entities,ORDER and CUSTOMER,as