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Oracle Database 11g PL/SQL Programming by Michael McLaughlin

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CHAPTER 3Language Fundamentals

This chapter builds on the discussion of PL/SQL architecture in Chapter 1. It explains the building blocks of the language, and how you define and declare variables. It describes how you assign values to variables and demonstrates datatype concepts. The chapter is divided into the following sections:

Image Character and lexical units

Image Block structures

Image Variable types

Scalar datatypes

Large objects

Composite datatypes

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