1. The Relational Database

A fish must swim three times—in water, in butter, and in wine.

—POLISH PROVERB

Topics Covered in This Chapter

Types of Databases

Early Database Models

The Relational Database Model

Relational Database Management Systems

Beyond the Relational Model

What the Future Holds

Summary

Review Questions

The relational database has been in existence for more than 40 years. It spawned a multibillion-dollar industry, is the most widely used type of database in the world today, and is an essential part of our everyday lives. It is very likely that you are using a relational database every time you purchase goods online or at a local store, make travel plans with your travel agent, check out books at the library, or make a purchase ...

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