Chapter 4, Problem 4.13RQ

Explanation of Solution

Relationship:

An association between several entities is termed as relationship.

• It is used to link the attributes in entities.
• It is represented in a “diamond” box with name of the relationship in Entity-Relationship diagram.

The following diagram demonstrates the “relationship” among entities.

Difference between relationship class and relationship instance:

Relationship class	Relationship instance
It is a relation between one with other entities (or) entity classes...