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.