Diagram entities

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

Diagram shows a horizontal row of five rectangles. Each rectangle has a single-word label. The rectangles are labeled as follows in order from left to right: name, address, voice, fax, modem.