Database Programming Section 3 Quiz - Oracle iLearning

Database Programming Section 3 Quiz - Oracle iLearning

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Section 3 Quiz
     (Answer all questions in this section)
                         
          1.      The PLAYERS table contains these columns:
PLAYERS TABLE:
LAST_NAME VARCHAR2 (20)
FIRST_NAME VARCHAR2 (20)
SALARY NUMBER(8,2)
TEAM_ID NUMBER(4)
MANAGER_ID NUMBER(9)
POSITION_ID NUMBER(4)
You must display the player name, team id, and salary for players whose salary is in the range from 25000 through 100000 and whose team id is in the range of 1200 through 1500. The results must be sorted by team id from lowest to highest and then further sorted by salary from highest to lowest. Which statement should you use to display the desired result?      Mark for Review
(1) Points
                         
               
SELECT last_name, first_name, team_id, salary
FROM players
WHERE salary BETWEEN 24999.99 AND 100000.01
AND team_id BETWEEN 1200 AND 1500
ORDER BY team_id DESC, salary DESC;
    
               
SELECT last_name, first_name, team_id, salary
FROM players
WHERE salary > 24999.99 AND salary < 100000
AND team_id BETWEEN 1200 AND 1500
ORDER BY team_id ASC, salary DESC;
    
               
SELECT last_name, first_name, team_id, salary
FROM players
WHERE (salary > 25000 OR salary < 100000)
AND team_id BETWEEN 1200 AND 1500
ORDER BY team_id, salary;
    
               
SELECT last_name, first_name, team_id, salary
FROM players
WHERE salary BETWEEN 25000 AND 100000
AND team_id BETWEEN 1200 AND 1500
ORDER BY team_id, salary DESC;(*)

    
                         
               
               
          2.      The following statement represents a multi-row function. True or False?
SELECT MAX(salary)
FROM employees      Mark for Review
(1) Points
                         
               
True (*)
    
               
False
    
          
          
                         
          3.      Evaluate this SQL statement:
SELECT e.employee_id, e.last_name, e.first_name, m.manager_id
FROM employees e, employees m
ORDER BY e.last_name, e.first_name
WHERE e.employee_id = m.manager_id;
This statement fails when executed. Which change will correct the problem?      Mark for Review
(1) Points
                         
               
Remove the table aliases in the WHERE clause.
    
               
Include a HAVING clause.
    
               
Remove the table aliases in the ORDER BY clause.
    
               
Reorder the clauses in the query. (*)
    
          
          
                         
          4.      The function COUNT is a single row function. True or False?      Mark for Review
(1) Points
                         
               
True
    
               
False (*)
    
          
          
                         
          5.      Will the following statement return one row?
SELECT MAX(salary), MIN(Salary), AVG(SALARY)
FROM employees;      Mark for Review
(1) Points
                         
               
No, it is illegal. You cannot use more than one multi-row function in a SELECT statement.
    
               
Yes, it will return the highest salary, the lowest salary, and the average salary from all employees. (*)
    
               
Yes, it will return the average salary from the employees table.
    
               
Yes, it will return the highest salary from each employee.
    
                         
               
     (Answer all questions in this section)
                         
          6.      Which of the following are examples of logical operators that might be used in a WHERE clause. (Choose Two)      Mark for Review
(1) Points
                         
               (Choose all correct answers)    
                         
               
AND, OR (*)
    
               
< >, =, <=, >=, <>
    
               
NOT (*)
    
               
LIKES
    
               
All of the above
    
                         
        
          
                         
          7.      Which of the following would be returned by this SQL statement:
SELECT First_name, last_name, department_id
FROM employees
WHERE department_id IN(50,80)
AND first_name LIKE ' C% '
OR last_name LIKE ' %s% '      Mark for Review
(1) Points
                         
               
FIRST_NAME    LAST_NAME    DEPARTMENT_ID
Shelly    Higgins    110

    
               
FIRST_NAME    LAST_NAME    DEPARTMENT_ID
Curtis    Davies    50

    
               
FIRST_NAME    LAST_NAME    DEPARTMENT_ID
Randall    Matos    50

    
               
FIRST_NAME    LAST_NAME    DEPARTMENT_ID
Michael    Hartstein    20

    
               
All of the above (*)
    
                         
               
                         
          8.      Which symbol in the WHERE clause means "Not Equal To"? (Choose Two)      Mark for Review
(1) Points
                         
               (Choose all correct answers)    
                         
               
<> (*)
    
               
=+
    
               
NOT IN (..) (*)
    
               
><
    
                         
     
                         
          9.      Which statement about the logical operators is true?      Mark for Review
(1) Points
                         
               
The order of operator precedence is AND, NOT, and OR.
    
               
The order of operator precedence is NOT, AND, and OR. (*)
    
               
The order of operator precedence is NOT, OR, and AND.
    
               
The order of operator precedence is AND, OR, and NOT.
    
                         
     
                         
          10.      Which comparison condition means "Less Than or Equal To"?      Mark for Review
(1) Points
                         
               
"=)"
    
               
">="
    
               
"<=" (*)
    
               
"+<"
    
                         
     
    (Answer all questions in this section)
                         
          11.      Evaluate this SELECT statement:
SELECT last_name, first_name, salary
FROM employees;
How will the results of this query be sorted?      Mark for Review
(1) Points
                         
               
The results will be sorted ascending by LAST_NAME, FIRST_NAME, and SALARY.
    
               
The results will be sorted ascending by the LAST_NAME column only.
    
               
The database will display the rows in whatever order it finds it in the database, so no particular order. (*)
    
               
The results will be sorted ascending by LAST_NAME and FIRST_NAME only.
    
                         
               
                         
          12.      What value will the following SQL statement return?
SELECT employee_id
FROM employees
WHERE employee_id BETWEEN 100 AND 150
   OR employee_id IN(119, 175, 205)
   AND (employee_id BETWEEN 150 AND 200);     Mark for Review
(1) Points
                         
               
100, 101, 102, 103, 104, 107, 124, 141, 142, 143, 144, 149 (*)
    
               
200, 201, 202, 203, 204, 205, 206
    
               
No rows will be returned
    
               
19
    
               
               
                         
          13.      Evaluate this SQL statement:
SELECT product_id, product_name, price
FROM products
ORDER BY product_name, price;
What occurs when the statement is executed?      Mark for Review
(1) Points
                         
               
The results are sorted numerically only.
    
               
The results are sorted numerically and then alphabetically.
    
               
The results are sorted alphabetically and then numerically. (*)
    
               
The results are sorted alphabetically only.
    
                         
               
                         
          14.      Which SELECT statement should you use to limit the display of product information to those products with a price of less than 50?      Mark for Review
(1) Points
                         
               
SELECT product_id, product_name
FROM products
HAVING price < 50;
    
               
SELECT product_id, product_name
FROM products
WHERE price < 50;
(*)
    
               
SELECT product_id, product_name
FROM products
WHERE price <= 50;
    
               
SELECT product_id, product_name
FROM products
WHERE price < 50.00
GROUP BY price;
    
               
SELECT product_id, product_name
FROM products
GROUP BY price < 50;
    
                         
               
                         
          15.      Evaluate this SELECT statement:
SELECT employee_id, last_name, first_name, salary 'Yearly Salary'
FROM employees
WHERE salary IS NOT NULL
ORDER BY last_name, 3;
Which clause contains an error?      Mark for Review
(1) Points
                         
               
ORDER BY last_name, 3;
    
               
WHERE salary IS NOT NULL
    
               
FROM employees
    
               
SELECT employee_id, last_name, first_name, salary 'Yearly Salary' (*)
    
                         
     

SELAMAT BERJUANG KAWAN…………………….



Oracle Ilearning for Database Design


Pelajar yang menyelesaikan Desain & Pemrograman Database Oracle Academy dengan kursus SQL dapat sebagai gantinya (atau juga) memilih untuk mempersiapkan dan mengikuti ujian sertifikasi SQL Server SQL Expert. Namun, ujian Oracle Database SQL Expert berisi topik tambahan yang akan membutuhkan lebih banyak belajar mandiri dan berlatih sendiri untuk mempersiapkan.



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Pembahasan didalam Oracle Ilearning - Oracle Academy



  • Oracle Ilearning for Database Design

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