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Oracle9i program with pl/sql Sample Questions:

1. When using a PL/SQL stored package, how is a side effect defined?

A) changes to database tables or packaged public variables defined in a package body
B) changes only to database tables
C) changes only to packaged public variables defined in a package specification
D) changes only to packaged public variables defined in a package body
E) changes to database tables or packaged variables defined in a package specification

2. What is true about stored procedures?

A) A stored procedure uses the DECLARE keyword in the procedure body to declare formal parameters.
B) A stored procedure must have at least one executable statement in the procedure body.
C) A stored procedure uses the DELCLARE keyword in the procedure specification to declare formal parameters.
D) A stored procedure is named PL/SQL block with at least one parameter declaration in the procedure specification.

3. Which two statements about functions are true? (Choose two.)

A) A stored function that is called from a SOL statement can return a value of any PL/SOL variable data type
B) From SOL*Plus, a function can be executed by giving the command EXECUTE functionname;
C) A function must have a return statement in its body to execute successfully
D) Client-side functions can be used in SOL statements
E) A stored function increases efficiency of queries by performing functions on the server rather than in the application

4. Which two program declarations are correct for a stored program unit? (Choose two)

A) CREATE OR REPLACE PROCEDURE tax_amt
(p_id NUMBER, p_amount OUT NUMBER(10, 2))
B) CREATE OR REPLACE PROCEDURE tax_amt
(p_id NUMBER, p_amount OUT NUMBER)
C) CREATE OR REPLACE FUNCTION tax_amt
(p_id NUMBER)
RETURN NUMBER(10,2)
D) CREATE OR REPLACE PROCEDURE tax_amt
(p_id NUMBER)
RETURN NUMBER
E) CREATE OR REPLACE FUNCTION tax_amt
(p_id NUMBER)
RETURN NUMBER

5. You disabled all triggers on the EMPLOYEES table to perform a data load. Now, you need to enable all triggers on the EMPLOYEES table. Which command accomplished this?

A) ALTER TRIGGERS ON TABLE employees ENABLE;
B) You cannot enable multiple triggers on a table in one command.
C) ALTER employees ENABLE ALL TRIGGERS;
D) ALTER TABLE employees ENABLE ALL TRIGGERS;

Solutions: