PL/SQL Online Quiz

Q 1 - Which of the following is not true about the exception handling section of a PL/SQL block?

A - This section starts with the EXCEPTION keyword.

B - It is a mandatory section.

C - It contains exception(s) that handle errors in the program.

D - None of the above.

Q 2 - Which of the following is true about scalar data types in PL/SQL?

A - They hold single values with no internal components.

B - Examples of scalar data types are NUMBER, DATE, or BOOLEAN.

C - PL/SQL provides subtypes of data types.

D - All are true.

Q 3 - Which of the following is not true about labelling PL/SQL loops?

A - PL/SQL loops can be labelled.

B - The label should be enclosed by angle brackets (< and >).

C - The label name appears at the beginning of the LOOP statement.

D - The label name can also appear at the end of the LOOP statement or with an EXIT statement.

Q 4 - Consider the following code snippet: what will be the output?

DECLARE
   a number(2) ;
BEGIN
   FOR a IN REVERSE 10 .. 20 LOOP
   END LOOP;
dbms_output.put_line(a);
END;

A - 11

B - 10

C - 29

D - 30

Q 5 - What would be the output of the following code?

DECLARE
   num number;
   fn number;

FUNCTION fx(x number)
RETURN number 
IS
   f number;
BEGIN
   IF x=0 THEN
      f := 1;
   ELSE
      f := x * fx(x-1);
   END IF;
RETURN f;
END;

BEGIN
   num:= 5;
   fn := fx(num);
   dbms_output.put_line(fn);
END;

A - 1

B - 5

C - 10

D - 125

Q 6 - Which of the following code will open a cursor named cur_employee?

A - OPEN cur_employee;

B - OPEN CURSOR cur_employee;

C - FETCH cur_employee;

D - FETCH CURSOR cur_employee;

Q 7 - Observe the syntax given below −

CREATE [OR REPLACE ] TRIGGER trigger_name 
{BEFORE | AFTER | INSTEAD OF } 
{INSERT [OR] | UPDATE [OR] | DELETE} 
[OF col_name] 
ON table_name 
[REFERENCING OLD AS o NEW AS n] 
[FOR EACH ROW] 
WHEN (condition)  
DECLARE
   Declaration-statements
BEGIN 
   Executable-statements
EXCEPTION
   Exception-handling-statements
END;

The {INSERT [OR] | UPDATE [OR] | DELETE} clause specifies a

A - DDL operation.

B - DML operation.

C - None of the above.

D - Both of the above.

Q 8 - Which of the following statement will create the specification for a package named cust_sal

A -

CREATE PACKAGE BODY cust_sal AS
 PROCEDURE find_sal(c_id customers.id%type);
END cust_sal;

B -

CREATE PACKAGE cust_sal AS
 PROCEDURE find_sal(c_id customers.id%type);
END cust_sal;

C -

CREATE PACKAGE SPECIFICATION cust_sal AS
 PROCEDURE find_sal(c_id customers.id%type);
END cust_sal;

D -

PACKAGE cust_sal AS
 PROCEDURE find_sal(c_id customers.id%type);
END cust_sal;

Q 9 - Which of the following code is the correct syntax for creating an index-by table named salary that will store integer values along with names and the name field will be the key?

A - TYPE salary IS TABLE OF NUMBER INDEX BY VARCHAR2(20);

B - CREATE TABLE salary OF NUMBER INDEX BY VARCHAR2(20);

C - TYPE salary IS INDEXED TABLE OF NUMBER INDEX BY VARCHAR2(20);

D - None of the above.

Q 10 - A transaction ends when

A - A COMMIT or a ROLLBACK statement is issued.

B - A DDL statement, like CREATE TABLE statement, is issued; because in that case a COMMIT is automatically performed.

C - A DCL statement, such as a GRANT statement, is issued; because in that case a COMMIT is automatically performed.

D - All of the above.