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Oracle® SQL by Example, Third Edition by Alice Rischert

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Chapter 2. SQL: The Basics

Now that you are familiar with the concepts of databases and schema diagrams, you are ready to start with hands-on exercises. You will learn the basics of SQL*Plus, the software tool that allows you to execute statements against the Oracle database. After you familiarize yourself with SQL*Plus, you will be ready to write SQL statements, or queries, to retrieve the data. SQL statements can range from very simple to highly complex; they can be a few words long or a few hundred words long. In this chapter, you begin by ...

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