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Oracle9i program with pl/sql Sample Questions:

1. Which four triggering events can cause a trigger to fire? (Choose four)

A) A user executes a CREATE or an ALTER table statement.
B) A specific user or any user logs on or off.
C) A database is shut down or started up.
D) A user executes a JOIN statement that uses four or more tables.
E) A user executes a SELECT statement with an ORDER BY clause.
F) A specific error or any errors occurs.

2. 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 fails because you cannot use the minimum and maximum functions in a BEFORE UPDATE trigger.
B) The trigger fires successfully.
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.

3. Which two statements about the overloading feature of packages are true? (Choose two)

A) Overloading allows different subprograms with the same number, type and order of parameters.
B) Overloading allows different subprograms with the same name and same number or type of parameters.
C) Overloading allows different functions with the same name that differ only in their return types.
D) Only local or packaged subprograms can be overloaded.
E) Overloading allows different subprograms with the same name, but different in either number, type or order of parameters.

4. You create a DML trigger. For the timing information, which is valid with a DML trigger?

A) ON SHUTDOWN
B) DURING
C) ON STATEMENT EXECUTION
D) BEFORE
E) INSTEAD

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

Solutions: