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Oracle 9i Internet Application Developer Introduction to Oracle: SQL and PL/SQL
 
O rder : 1z0-001 Exam
Practice Exam: 1z0-001
Exam Number/Code: 1z0-001
Exam Name: 9i Internet Application Developer Introduction to Oracle: SQL and 
PL/SQL
Questions and Answers: 171 Q&As 
Free 1z0-001 Braindumps
  
  
Exam : Oracle 1Z0-001
Title : INTRODUCTION TO ORACLE: SQL AND PL/SQL
1. Which ALTER command would you use to reinstate a disabled primary key constraint?
A. ALTER TABLE cars
ENABLE PRIMARY KEY (id);
B. ALTER TABLE cars
ENABLE CONSTRAINT cars_id_pk;
C. ALTER TABLE cars
ENABLE PRIMARY KEY (id) CASCADE;
D. ALTER TABLE cars
ADD CONSTRAINT cars_id_pk PRIMARY KEY (id);
Answer: B
2. The PRODUCT table contains these columns:
ID NUMBER(9) PK
COST NUMBER(7,2)
SALE_PRICE NUMBER(7,2)
Management has asked you to calculate the net revenue per unit for each product if the cost of each product is 
increased by 10% and the sale price of each product is increased by 25%.
You issue this SQL statement:
SELECT id, sale_price * 1.25 - cost * 1.10 
FROMproduct;
Which conclusion can you draw from the results?
A. Only the required results are displayed.
B. The results provide more information than management requested.
C. A function needs to be included in the SELECT statement to achieve the desired results.
D. The order of the operations in the calculation needs to be changed to achieve the required results.
Answer: A
3. Examine this block of code:
SET SERVEROUTPUT ON
DECLARE
 
 

 
 
x NUMBER;
v_sal NUMBER;
v_found VARCHAR2(10) := 'TRUE';
BEGIN
x := 1;
v_sal := 1000;
DECLARE
v_found VARCHAR2(10);
y NUMBER;
BEGIN
IF (v_sal > 500) THEN
v_found := 'YES';
END IF;
DBMS_OUTPUT.PUT_LINE ('Value of v_found is '|| v_found);
DBMS_OUTPUT.PUT_LINE ('Value of v_sal is '|| v_sal);
y := 20;
END;
DBMS_OUTPUT.PUT_LINE ('Value of v_found is '|| v_found);
DBMS_OUTPUT.PUT_LINE ('Value of Y is '|| TO_CHAR(y));
END;
SET SERVEROUTPUT OFF
Why does this code produce an error when executed?
A. The value of V_FOUND cannot be 'YES'.
B. Variable V_FOUND is declared at more than one location.
C. Variable Y is declared in the inner block and referenced in the outer block.
D. Variable V_SAL is declared in the outer block and referenced in the inner block.
Answer: C
4. You issue this command:
CREATE SYNONYM emp
FOR ed.employee;
Which task has been accomplished?
A. The need to qualify an object name with its schema was eliminated for user Ed.
B. The need to qualify an object name with its schema was eliminated for only you.
C. The need to qualify an object name with its schema was eliminated for all users.
D. The need to qualify an object name with its schema was eliminated for users with access.
Answer: B
5. Your company wants to give each employee a $100 salary increment. You need to evaluate the results from the 
EMP table prior to the actual modification. If you do not want to store the results in the database, which statement is 
valid?
A. You need to add a column to the EMP table.
B. You need to give the arithmetic expression that involves the salary increment in the SET clause of the UPDATE 
statement.
C. You need to give the arithmetic expression that involves the salary increment in the SELECT clause of the 
SELECT statement.
D. You need to give the arithmetic expression that involves the salary increment in the UPDATE clause of the 
SELECT statement.
E. You need to give the arithmetic expression that involves the salary increment in the DISPLAY clause of the 
SELECT statement.
Answer: C
6. Click on the EXHIBIT button and examine the structure of the DEPARTMENT and EMPLOYEE tables.
Evaluate this SQL statement:
 
 
 
 

 
 
CREATE INDEX emp_dept_id_idx
ON employee(dept_id);
Which result will the statement provide?
A. Store an index in the EMPLOYEE table.
B. Increase the chance of full table scans.
C. May reduce the amount of disk I/O for SELECT statements.
D. May reduce the amount of disk I/O for INSERT statements.
E. Override the unique index created when the FK relationship was defined.
Answer: C
7. Click on the EXHIBIT button and examine the table instance chart for the cars table.
Which SELECT statement will display style, color, and lot number for all cars based on the model entered at the 
prompt, regardless of case?
A. SELECT style, color, lot_no
FROM cars
WHERE model = UPPER('&model');
B. SELECT style, color, lot_no
FROM cars
WHERE model = '&model';
C. SELECT style, color, lot_no
FROM cars
WHERE UPPER(model) = UPPER('&model');
D. SELECT style, color, lot_no
FROM cars
WHERE UPPER(model) = '&model';
Answer: C
8. The structure of the DEPT table is as follows:
Name Null? Type
------------------------------- -------- ------- 
DEPTNO NOT NULL NUMBER(2)
DNAME VARCHAR2(14)
LOC VARCHAR2(13)
Examine the code:
DECLARE
TYPE dept_record_type IS RECORD
(dno NUMBER,
name VARCHAR2(20));
dept_rec dept_record_type;
BEGIN
SELECT deptno, dname
INTO dept_rec
FROM dept
WHERE deptno = 10;
END;
Which statement displays the name of the selected department?
A. DBMS_OUTPUT.PUT_LINE(name);
B. DBMS_OUTPUT.PUT_LINE(dname);
C. DBMS_OUTPUT.PUT_LINE(dept_rec.name);
D. DBMS_OUTPUT.PUT_LINE(dept_rec.dname);
E. DBMS_OUTPUT.PUT_LINE(dept_rec(name));
Answer: C
9. Examine this block of code:
 
 
 

 
SET SERVEROUTPUT ON
DECLARE
x NUMBER;
v_sal NUMBER;
v_found VARCHAR2(10) := 'TRUE';
BEGIN
x := 1;
v_sal := 1000;
DECLARE
v_found VARCHAR2(10);
y NUMBER;
BEGIN
IF (v_sal > 500) THEN
v_found := 'YES';
END IF;
DBMS_OUTPUT.PUT_LINE ('Value of v_found is '|| v_found);
DBMS_OUTPUT.PUT_LINE ('Value of v_sal is '|| v_sal);
y := 20;
END;
DBMS_OUTPUT.PUT_LINE ('Value of v_found is '|| v_found);
DBMS_OUTPUT.PUT_LINE ('Value of Y is '|| TO_CHAR(y));
END;
SET SERVEROUTPUT OFF
What is the result of executing this block of code?
A. PLS-00201: identifier 'Y' must be declared 
B. Value of v_found is YES
Value of v_sal is 1000
Value of v_found is TRUE
C. Value of v_found is YES
Value of v_sal is 1000
Value of v_found is YES
Value of Y is 20
D. PLS-00201: identifier 'v_sal' must be declared 
PLS-00201: identifier 'Y' must be declared 
E. Value of v_found is YES
Value of v_sal is 1000
Value of v_found is TRUE
Value of Y is 20
Answer: A
10. Given this executable section of a PL/SQL block:
BEGIN
FOR employee_record IN salary_cursor LOOP
employee_id_table(employee_id) :=
employee_record.last_name;
END LOOP;
CLOSE salary_cursor;
END;
Why does this section cause an error?
A. The cursor needs to be opened.
B. No FETCH statements were issued.
C. Terminating conditions are missing.
D. The cursor does not need to be closed.
Answer: D
 
 

 
11. You need to perform a major update on the EMPLOYEE table. You have decided to disable the PRIMARY KEY 
constraint on the empid column and the CHECK constraint on the job column.
What happens when you try to enable the constraints after the update is completed?
A. You need to recreate the constraints once they are disabled.
B. Any existing rows that do not confirm with the constraints are automatically deleted.
C. Only the future values are verified to confirm with the constraints, leaving the existing values unchecked.
D. The indexes on both the columns with the PRIMARY KEY constraint and the CHECK constraint are automatically 
re-created. 
E. All the existing column values are verified to confirm with the constraints and an error message is generated if any 
existing values do not confirm.
Answer: E
12. Click on the EXHIBIT button and examine the table instance chart for the cars table.
You query the database with this command:
SELECT lot_no "Lot Number", COUNT(*) "Number of Cars Available"
FROM cars
WHERE model = 'Fire'
GROUP BY lot_no
HAVING COUNT(*) > 10
ORDER BY COUNT(*);
Which clause restricts which groups are displayed?
A. SELECT lot_no "Lot Number", COUNT(*) "Number of Cars Available"
B. WHERE model = 'Fire'
C. HAVING COUNT(*) > 10
D. GROUP BY lot_no
E. ORDER BY COUNT(*)
Answer: C
13. The EMPLOYEE table contains these columns:
BONUSNUMBER(7,2)
DEPT_ID NUMBER(9)
There are 10 departments and each department has at least 1 employee. Bonus values are greater than 500; not all 
employees receive a bonus.
Evaluate this PL/SQL block:
DECLARE
v_bonusemployee.bonus%TYPE := 300;
BEGIN
UPDATE employee
SET bonus = bonus + v_bonus
WHERE dept_id IN (10, 20, 30);
COMMIT;
END;
What will be the result?
A. All employees will be given a 300 bonus.
B. A subset of employees will be given a 300 bonus.
C. All employees will be given a 300 increase in bonus.
D. A subset of employees will be given a 300 increase in bonus.
Answer: D
14. Which statement is valid within the executable section of a PL/SQL block?
A. BEGIN
emp_rec emp%ROWTYPE;
END;
B. WHEN NO_DATA_FOUND THEN
 
 

 
 
DBMS_OUTPUT.PUT_LINE ('No records found');
C. SELECT ename, sal
INTO v_ename, v_sal
FROM emp
WHERE empno = 101;
D. PROCEDURE calc_max (n1 NUMBER,n2 NUMBER,p_max OUT NUMBER) IS
BEGIN
IF n1 > n2 THEN
p_max := n1;
ELSE
p_max := n2;
END;
Answer: C
15. You want to display the average salary for departments 20 and 50, but only if those departments have an average 
salary of at least 2000. Which statement will produce the required results?
A. SELECT deptno, AVG(sal)
FROM emp
WHERE deptno IN (20, 50)
GROUP BY deptno
HAVING AVG(sal) >= 2000;
B. SELECT deptno, AVG(sal)
FROM emp
GROUP BY deptno
HAVING AVG(sal) >= 2000
AND deptno IN (20, 50);
C. SELECT deptno, AVG(sal)
FROM emp
WHERE deptno IN (20, 50)
AND AVG(sal) >= 2000
GROUP BY deptno;
D. SELECT deptno, AVG(sal)
FROM emp
WHERE deptno IN (20, 50)
GROUP BY AVG(sal)
HAVING AVG(sal) >= 2000;
Answer: A
16. Click on the EXHIBIT button and examine the table instance chart for the patient table.
You need to create the patient_id_seq sequence to be used with the patient table's primary key column. The 
sequence should begin at 1000, have a maximum value of 999999999, never reuse any numbers, and increment by 1.
Which statement would you use to complete this task?
A. CREATE SEQUENCE patient_id_seq
START WITH 1000
MAXVALUE 999999999
NOCYCLE;
B. CREATE SEQUENCE patient_id_seq
START WITH 1000
MAXVALUE 999999999
STEP BY 1;
C. CREATE SEQUENCE patient_id_seq
ON patient (patient_id)
MINVALUE 1000
MAXVALUE 999999999
 
 
 

 
 
INCREMENT BY 1
NOCYCLE;
D. This task cannot be accomplished.
Answer: A
17. You need to execute a script file named QUERYEMP.SQL from your SQL*Plus environment. Which command do 
you use?
A. RUN QUERYEMP
B. GET QUERYEMP
C. START QUERYEMP
D. EXECUTE QUERYEMP
Answer: C
18. Examine the declaration section:
DECLARE
CURSOR emp_cursor(p_deptno NUMBER, p_job VARCHAR2)
IS
SELECT empno, ename
FROM emp
WHERE deptno = p_deptno
AND job = p_job;
BEGIN
...
Which statement opens this cursor successfully?
A. OPEN emp_cursor;
B. OPEN emp_cursor('Clerk', 10);
C. OPEN emp_cursor(10,'Analyst');
D. OPEN emp_cursor(p_deptno, p_job);
Answer: C
19. Which should you do after each FETCH statement in a PL/SQL block?
A. Open the cursor.
B. Close the cursor.
C. Initialize the loop.
D. Test for rows using a cursor attribute.
Answer: D
20. Evaluate this IF statement:
IF v_value > 100 THEN
v_new_value := 2 * v_value;
ELSIF v_value > 200 THEN
v_new_value := 3 * v_value;
ELSIF v_value < 300 THEN
v_new_value := 4 * v_value;
ELSE
v_new_value := 5 * v_value;
END IF;
What would be assigned to V_NEW_VALUE if V_VALUE is 250?
A. 250
B. 500
C. 750
D. 1000
E. 1250
Answer: B
 
  
 

 
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