2 Basic Elements of Oracle SQL

This chapter contains reference information on the basic elements of Oracle SQL. These elements are the simplest building blocks of SQL statements. Therefore, before using the SQL statements described in this book, you should familiarize yourself with the concepts covered in this chapter.

This chapter contains these sections:

• Data Types

• Data Type Comparison Rules

• Literals

• Format Models

• Nulls

• Comments

• Database Objects

• Database Object Names and Qualifiers

• Syntax for Schema Objects and Parts in SQL Statements