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Oracle9i program with pl/sql Sample Questions:

1. When creating a function in SQL *Plus, you receive this message:
"Warning: Function created with compilation errors."
Which command can you issue to see the actual error message?

A) SHOW FUNCTION_ERROR
B) SHOW USER_ERRORS
C) SHOW ALL_ERRORS
D) SHOW ERRORS

2. What is a condition predicate in a DML trigger?

A) A conditional predicate means you use the NEW and OLD qualifiers in the trigger body as a condition.
B) A conditional predicate allows you to specify a SHUTDOWN or STARTUP condition in the trigger body.
C) A conditional predicate allows you to combine several DBM triggering events into one in the trigger body.
D) A conditional predicate allows you to specify a WHEN-LOGGING-ON condition in the trigger body.

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

4. Examine this package:
CREATE OR REPLACE PACKAGE pack_cur IS CURSOR c1 IS SELECT prodid FROM poduct ORDER BY prodid DESC; PROCEDURE proc1; PROCEDURE proc2; END pack_cur; /
CREATE OR REPLACE PACKAGE BODY pack_cur IS v_prodid NUMBER; PROCEDURE proc1 IS BEGIN OPEN c1;
LOOP
FETCH c1 INTO v_prodid;
DBMS_OUTPUT.PUT_LINE('Row is: ' || c1%ROWCOUNT);
EXIT WHEN c1%ROWCOUNT >= 3;
END LOOP;
END proc1;
PROCEDURE proc2 IS
BEGIN
LOOP
FETCH c1 INTO v_prodid;
DBMS_OUTPUT.PUT_LINE('Row is: ' ||c1%ROWCOUNT);
EXIT WHEN c1%ROWCOUNT >= 6;
END LOOP;
CLOSE c1;
END proc2;
END pack_cur;
/
The product table has more than 1000 rows. The SQL *Plus SERVEROUTPUT setting is turned
on in your session.
You execute the procedure PROC1 from SQL *Plus with the command:
EXECUTE pack_cur.proc1
What is the output in your session?

A) ERROR at line 1:
B) Row is: 4 Row is: 5 Row is: 6
C) Row is: Row is: Row is:
D) Row is: 1 Row is: 2 Row is: 3

5. Which three statements are true regarding database triggers? (Choose three)

A) A database trigger is a PL/SQL block, C, or Java procedure associated with a table, view, schema, or the database.
B) With a schema, triggers fire for each event for all users; with a database, triggers fire for each event for that specific user.
C) A database trigger needs to be executed explicitly whenever a particular event takes place.
D) A database trigger fires whenever a data event (such as DML) or system event (such as logon, shutdown) occurs on a schema or database.
E) A database trigger executes implicitly whenever a particular event takes place.

Solutions: