Chapter -02 Declaring PL/SQL Variables - 01

Objectives

After completing this lesson,you should be able to do the following

Recognize valid and invalid identifies.

List the uses of variables.

Declare and initialize variables.

List and descible various data types.

Indentify the benefits of using the %TYPE attribute.

Declare,use and print bind variables.

Use of Vaiables

Variables can be used for:

Temporary storage of data

Manipulation of stored values

Reusability

Demo 02

DECLARE
v_myName        VARCHAR2(20) := 'John';
BEGIN
v_myName := 'Steven';
DBMS_OUTPUT.PUT_LINE('My name is : ' || v_myName);
END;
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