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

2. What happens during the execute phase with dynamic SQL for INSERT, UPDATE, and DELETE operations?

A) An area of memory is established to process the SQL statement.
B) The rows are selected and ordered.
C) The SQL statement is run and the number of rows processed is returned.
D) The area of memory established to process the SQL statement is released.
E) The validity of the SQL statement is established.

3. You have an AFTER UPDATE row-level on the table EMP. The trigger queries the EMP table and inserts the updating user's information into the AUDIT_TABLE.
What happens when the user updates rows on the EMP table?

A) A compile time error occurs.
B) A runtime error occurs. The effect of trigger body and the triggering statement are rolled back.
C) A runtime error occurs. The update on the EMP table does not take place, but the insert into the AUDIT_TABLE occurs.
D) The trigger fires successfully. The update on the EMP table occurs, and data is inserted into theAUDIT_TABLE table.
E) A runtime error occurs. The effect of trigger body is rolled back, but the update on the EMP table takes place.

4. You want to create a PL/SQL block of code that calculates discounts on customer orders. -This code will be invoked from several places, but only within the program unit ORDERTOTAL. What is the most appropriate location to store the code that calculates the discounts?

A) A block of code in a PL/SQL library.
B) A stored procedure on the server.
C) A standalone procedure on the client machine.
D) A local subprogram defined within the program unit ORDERTOTAL.
E) A block of code in the body of the program unit ORDERTOTAL.

5. Which statement is true about removing packages?

A) You must remove the package body first
B) Removing the package body removes the specification too
C) Removing a package specification removes all stand alone stored functions named in the specification
D) Removing a package specification removes the body too
E) You must remove both the package body and the specification separately

Solutions: