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Oracle9i program with pl/sql Sample Questions:

1. You need to disable all triggers on the EMPLOYEES table.Which command accomplishes this?

A) ALTER TABLE employees DISABLE ALL TRIGGERS;
B) ALTER employees DISABLE ALL TRIGGERS;
C) None of these commands; you cannot disable multiple triggers on a table in one command.
D) ALTER TRIGGERS ON TABLE employees DISABLE;

2. Examine this code:
CREATE OR REPLACE PACKAGE metric_converter
IS
c_height CONSTRAINT NUMBER := 2.54;
c_weight CONSTRAINT NUMBER := .454;
FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER;
FUNCTION calc_weight (p_weight_in_pounds NUMBER)
RETURN NUMBER;
END;
/
CREATE OR REPLACE PACKAGE BODY metric_converter
IS
FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_height_in_inches * c_height;
END calc_height;
FUNCTION calc_weight (p_weight_in_pounds NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_weight_in_pounds * c_weight
END calc_weight
END metric_converter;
/
CREATE OR REPLACE FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_height_in_inches * metric_converter.c_height;
END calc_height;
/
Which statement is true?

A) If you remove the package specification, then the package body is removed.
B) If you remove the package specification, then the package body and the stand alone stored function CALC_HEIGHT are removed.
C) If you remove the package body, then the package specification is removed.
D) If you remove the stand alone stored function CALC_HEIGHT, then the METRIC_CONVERTER package body and the package specification are removed.
E) If you remove the package body, then the package specification and the stand alone stored function CALC_HEIGHT are removed.
F) The stand alone function CALC_HEIGHT cannot be created because its name is used in a packaged function.

3. Examine this procedure:
CREATE OR REPLACE PROCEDURE UPD_BAT_STAT (V_ID IN NUMBER DEFAULT 10, V_AB IN NUMBER DEFAULT 4) IS BEGIN UPDATE PLAYER_BAT_STAT SET AT_BATS = AT_BATS + V_AB WHERE PLAYER_ID = V_ID; COMMIT; END;
Which two statements will successfully invoke this procedure in SQL *Plus? (Choose two)

A) EXECUTE UPD_BAT_STAT;
B) EXECUTE UPD_BAT_STAT(31, 'FOUR','TWO');
C) RUN UPD_BAT_STAT;
D) UPD_BAT_STAT(V_AB=>10, V_ID=>31);
E) EXECUTE UPD_BAT_STAT(V_AB=>10, V_ID=>31);

4. Examine this code:
CREATE OR REPLACE PACKAGE comm_package
IS
g_comm NUMBER := 10;
PROCEDURE reset_comm(p_comm IN NUMBER);
END comm_package;
/
User Jones executes the following code at 9:01am: EXECUTE comm_package.g_comm := 15
User Smith executes the following code at 9:05am: EXECUTE comm_paclage.g_comm := 20
Which statement is true?

A) g_comm has a value of 15 at 9:03 am for both Jones and Smith.
B) g_comm has a value of 15 at 9:06am for Smith.
C) g_comm has a value of 10 at 9:03am for both Jones and Smith
D) g_comm has a value of 10 at 9:06am for both Jones and Smith.
E) g_comm has a value of 20 at 9:06am for both Jones and Smith.
F) g_comm has a value of 15 at 9:06am for Jones.

5. Which statement is valid when removing procedures?

A) Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package specification.
B) Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package body.
C) Use a drop procedure statement to drop a standalone procedure.
D) For faster removal and re-creation, do not use a drop procedure statement.
Instead, recompile the procedure using the alter procedure statement with the REUSE SETTINGS
clause.

Solutions: