Later in this chapter you can learn how to use the E-R
diagrams. For now, create a separate, rectangular box for each entity
in the telephone directory example, as the following figure shows. Diagram data objects shows how to put the entities together
with relationships. Figure 1: Entities
in the personal telephone directory example
Have feedback?
Google Analytics is used to store comments and ratings. To provide a comment or rating for a topic, click Accept All Cookies or Allow All in Cookie Preferences in the footer of this page.