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 statements described in Chapter 10 through Chapter 19, you should familiarize yourself with the concepts covered in this chapter.

This chapter contains these sections:

• Datatypes

• Datatype Comparison Rules

• Literals

• Format Models

• Nulls

• Comments

• Database Objects

• Schema Object Names and Qualifiers

• Syntax for Schema Objects and Parts in SQL Statements