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Oracle9i program with pl/sql Sample Questions:

1. Which statements are true? (Choose all that apply)

A) If errors occur during the compilation of a trigger, the trigger is still created.
B) If errors occur during the compilation of a trigger you can go into SQL *Plus and query the USER_TRIGGERS data dictionary view to see the compilation errors.
C) If errors occur during the compilation of a trigger you can use the SHOW ERRORS command within iSQL *Plus to see the compilation errors.
D) If errors occur during the compilation of a trigger you can go into SQL *Plus and query the USER_ERRORS data dictionary view to see compilation errors.

2. Examine this code:
CREATE OR REPLACE PROCEDURE set_bonus
(p_cutoff IN VARCHAR2 DEFAULT 'WEEKLY'
p_employee_id IN employees_employee_id%TYPE
p_salary IN employees_salary%TYPE,
p_bonus_percent IN OUT NUMBER DEFAULT 1.5,
p_margin OUT NUMBER DEFAULT 2,
p_bonus_value OUT NUMBER)
IS
BEGIN UPDATE emp_bonus SET bonus_amount =(p_salary * p_bonus_percent)/p_margin WHERE employee_id = p_employee_id; END set_bonus; /
You execute the CREATE PROCEDURE statement above and notice that it fails. What are two reasons why it fails? (Choose two)

A) The declaration of the format parameter p_margin cannot have a DEFAULT clause.
B) The formal parameter p_cutoff cannot have a DEFAULT clause.
C) The format parameter p_bonus_value is declared but is not used anywhere.
D) You cannot update a table using a stored procedure.
E) The declaration of the format parameter p_bonus_percent cannot have a DEFAULT clause.
F) The syntax of the UPDATE statement is incorrect.

3. When using a packaged function in a query, what is true?

A) You can not use packaged functions in a query statement.
B) The packaged function cannot execute an INSERT, UPDATE, or DELETE statement against the table that is being queried.
C) The packaged function can execute an INSERT, UPDATEM or DELETE statement against the table that is being queried if the pragma RESTRICT REFERENCE is used.
D) The COMMIT and ROLLBACK commands are allowed in the packaged function.
E) The packaged function can execute and INSERT, UPDATE, or DELETE statement against the table that is being queried if it is used in a subquery.

4. The creation of which database objects will cause a DDL trigger to fire? (Choose all that apply)

A) Index
B) Cluster
C) Database links
D) Dimensions
E) Package
F) Synonyms
G) Function

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

Solutions: