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Variables 1. Variables are used to temporarily store the value. 2. Variables are used to storing and manipulating data. Identifier 1. Identifiers are names of variables. 2. Identifiers are used to name any PL/SQL object such as variables, types, cursors, and subprograms. Handling Variables in PL/SQL Declared and initialized in the declarative section. Used and assigned new values in the executab..

SET SERVEROUTPUT ON DECLARE f_name varchar(20); BEGIN SELECT first_name INTO f_name FROM employees WHERE employee_id = 100; DBMS_OUTPUT.PUT_LINE(' The First Name of the Employee is '||f_name); END;PL/SQL doesn't have any functionality built in it. Enable output in iSQL PLUS with the command SET SERVEROUTPUT ON Use a predefined Oracle Package and its procedure DBMS_OUTPUT.PUT_LINE

SET SERVEROUTPUT ON DECLARE f_name varchar(20); BEGIN SELECT first_name INTO f_name FROM employees WHERE employee_id = 100; DBMS_OUTPUT.PUT_LINE(' The First Name of the Employee is '||f_name); END;PL/SQL doesn't have any functionality built in it. Enable output in iSQL PLUS with the command SET SERVEROUTPUT ON Use a predefined Oracle Package and its procedure DBMS_OUTPUT.PUT_LINE

DECLARE f_name varchar(20); BEGIN SELECT first_name INTO f_name FROM employees WHERE employee_id = 100; END;

DECLARE f_name varchar(20); BEGIN SELECT first_name INTO f_name FROM employees WHERE employee_id = 100; END;

AnonymousProcedureFunction[DECLARE] BEGIN -- statements [EXCEPTION] END;PROCEDURE name IS BEGIN -- statements [EXCEPTION] END;FUNCTION name RETURN datatype IS BEGIN -- statements [EXCEPTION] END; Anonymous : Not stored in the database. To run the same block again, you have to rewrite the same code again. Subprograms : Stored in the database and declared as either a Procedure or a function. ** A ..

AnonymousProcedureFunction[DECLARE] BEGIN -- statements [EXCEPTION] END;PROCEDURE name IS BEGIN -- statements [EXCEPTION] END;FUNCTION name RETURN datatype IS BEGIN -- statements [EXCEPTION] END; Anonymous : Not stored in the database. To run the same block again, you have to rewrite the same code again. Subprograms : Stored in the database and declared as either a Procedure or a function. ** A ..

DECLARE (Optional) Variables, cursors, user-defined exceptions BEGIN (Mandatory) - SQL Statements - PL/SQL statements EXCEPTION Actions to perform when errors occur END; (Mandatory) ** The END block is terminated with a semicolon.

DECLARE (Optional) Variables, cursors, user-defined exceptions BEGIN (Mandatory) - SQL Statements - PL/SQL statements EXCEPTION Actions to perform when errors occur END; (Mandatory) ** The END block is terminated with a semicolon.