Declaring Variables

·       Introduction to Variables in PL/SQL

·       Purpose of Declaring Variables

·       PL/SQL Block Structure Review

·       Variable Declaration Syntax

·       Naming Rules for Variables

·       Data Types in Variable Declarations

·       Scalar Data Types Overview

·       Numeric Data Type Variables

·       Character Data Type Variables

·       Date and Timestamp Variables

·       Boolean Variables

·       %TYPE Attribute

·       %ROWTYPE Attribute

·       User-Defined Data Types

·       Constants in PL/SQL

·       Declaring Variables with DEFAULT

·       Initialization of Variables

·       Variable Scope and Visibility

·       Local vs Global Variables

·       Variables in Anonymous Blocks

·       Variables in Procedures

·       Variables in Functions

·       Variables in Packages

·       Bind Variables

·       Substitution Variables

·       Using Variables in Expressions

·       Assigning Values to Variables

·       Using Variables in SQL Statements

·       NULL and NOT NULL Variables

·       Variables and Memory Allocation

·       Variables in Conditional Statements

·       Variables in Loops

·       Variables in Exception Handling

·       RECORD Variables

·       Collection Variables

·       Variables and Type Compatibility

·       Performance Considerations for Variables

·       Debugging Variable Issues

·       Best Practices for Variable Declaration

·       Common Variable Declaration Mistakes