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Oracle9i program with pl/sql Sample Questions:

1. Which statement is valid when removing procedures?

A) Use a drop procedure statement to drop a standalone procedure.
B) Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package specification.
C) Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package body.
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.

2. 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 20 at 9:06am for both Jones and Smith.
B) g_comm has a value of 10 at 9:03am for both Jones and Smith
C) g_comm has a value of 15 at 9:06am for Jones.
D) g_comm has a value of 10 at 9:06am for both Jones and Smith.
E) g_comm has a value of 15 at 9:06am for Smith.
F) g_comm has a value of 15 at 9:03 am for both Jones and Smith.

3. Examine this code:
CREATE OR REPLACE PROCEDURE add_dept
( p_name departments.department_name%TYPE DEFAULT 'unknown',
p_loc departments.location_id%TYPE DEFAULT 1700)
IS
BEGIN
INSERT INTO departments(department_id, department_name,
loclation_id)
VALUES(dept_seq.NEXTVAL,p_name, p_loc);
END add_dept;
/
You created the add_dept procedure above, and you now invoke the procedure in SQL *Plus.
Which four are valid invocations? (Choose four)

A) EXECUTE add_dept(p_name=>'Education', 2500)
B) EXECUTE add_dept(p_loc=>2500, p_name=>'Education')
C) EXECUTE add_dept('Education', 2500)
D) EXECUTE add_dept('2500', p_loc =>2500)
E) EXECUTE add_dept(p_loc=>2500)

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

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

5. You have a row level BEFORE UPDATE trigger on the EMP table. This trigger contains a SELECT statement on the EMP table to ensure that the new salary value falls within the minimum and maximum salary for a given job title.
What happens when you try to update a salary value in the EMP table?

A) The trigger fires successfully.
B) The trigger fails because you cannot use the minimum and maximum functions in a BEFORE UPDATE trigger.
C) The trigger fails because it needs to be a row level AFTER UPDATE trigger.
D) The trigger fails because a SELECT statement on the table being updated is not allowed.

Solutions: