Chapter 2. Relational Databases, SQL, and PL/SQL
As you now know, SQLJ enables you to access a database using SQL statements in your Java programs. Therefore, to use SQLJ, you need to know about databases and SQL. This chapter provides a basic introduction to relational databases, SQL, and Oracle's proprietary PL/SQL procedural language. It cannot possibly cover these large subjects in depth, but it will give you a strong enough foundation for you to be productive and to understand the rest of this book. For a detailed discussion of SQL, I recommend the book Oracle 8i: The Complete Reference by Kevin Loney and George Koch (Oracle Press). If you want to learn more about PL/SQL, I recommend Oracle PL/SQL Programming by Steven Feuerstein and Bill Pribyl (O'Reilly).
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