Oracle AcademyTest: Final Exam Semester 1 Section 16

Oracle AcademyTest: Final Exam Semester 1  Section 16 - Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

oracle academy test

Semester 1 Final Exam covers Sections 11-17 of Database Design.  


 Section 16 
 (Answer all questions in this section) 
      
11.  The PLAYERS table contains these columns: 
PLAYER_ID NUMBER(9) 
LAST_NAME VARCHAR2(20) 
FIRST_NAME VARCHAR2 (20) 
TEAM_ID NUMBER (4) 
MANAGER_ID NUMBER (9) 
POSITION_ID NUMBER (4) 

Which SELECT statement should you use if you want to display unique combinations of the TEAM_ID and MANAGER_ID columns? 
 Mark for Review 
(1) Points 
      
    SELECT * FROM players; 
  
    SELECT team_id, manager_id FROM players; 
  
    SELECT DISTINCT team_id, manager_id FROM players; (*) 
  
    SELECT team_id, DISTINCT manager_id FROM players; 
  
    SELECT team_id, manager_id DISTINCT FROM players; 
  
      
      Incorrect. See Section 16 Lesson 2.  
  
      
12.  Evaluate this SELECT statement: 
SELECT * 
FROM employees
WHERE department_id IN(10, 20, 30) 
AND salary > 20000; 

Which values would cause the logical condition to return TRUE?
 Mark for Review 
(1) Points 
      
    DEPARTMENT_ID = 10 and SALARY = 20000 
  
    DEPARTMENT_ID = 20 and SALARY = 20000 
  
    DEPARTMENT_ID = null and SALARY = 20001 
  
    DEPARTMENT_ID = 10 and SALARY = 20001 (*) 
  
      
      Incorrect. See Section 16 Lesson 2.  
  
      
13.  Which of the following commands will display the last name concatenated with the job ID from the employees table, separated by a comma and space, and label the resulting column "Employee and Title"?  Mark for Review 
(1) Points 
      
    SELECT " last name" ||', '|| "job_id" + "Employee and Title" FROM employees; 
  
    SELECT last_name||', '|| job_id "Employee and Title" FROM employees; (*) 
  
    SELECT " last name" ||', '|| "job_id" + "Employee and Title" FROM emp; 
  
    SELECT last_name||","|| job_id "Employee and Title" FROM employees; 
  
      
      Incorrect. See Section 16 Lesson 2.  
  
      
14.  What does the DISTINCT keyword do when it is used in a SELECT clause?  Mark for Review 
(1) Points 
      
    Hides NULL values 
  
    Eliminates all unique values and compares values 
  
    Eliminates duplicate rows in the result (*) 
  
    Eliminates only unique rows in the result 
  
      
      Incorrect. See Section 16 Lesson 1.  
  
      
 15.  When using the LIKE condition, which symbol represents any sequence of none, one or more characters?  Mark for Review 
(1) Points 
      
    _ 
  
    % (*) 
  
    # 
  
    & 
  
      
      Incorrect. See Section 16 Lesson 1.  
  
      
16.  Which of the following elements cannot be included in a WHERE clause?  Mark for Review 
(1) Points 
      
    A column alias (*) 
  
    A column name 
  
    A comparison condition 
  
    A constant 
  
      
      Correct.  
  
      
17.  Which comparison operator searches for a specified character pattern?  Mark for Review 
(1) Points 
      
    IN 
  
    LIKE (*) 
  
    BETWEEN...AND... 
  
    IS NULL 
  
      
      Incorrect. See Section 16 Lesson 1.  
  
      
  18.  Where in a SQL statement can you not use arithmetic operators?  Mark for Review 
(1) Points 
      
    SELECT 
  
    FROM (*) 
  
    WHERE 
  
    NONE 
  
      
      Incorrect. See Section 16 Lesson 1.  
  
      
  19.  Which comparison condition would you use to select rows that match a character pattern?  Mark for Review 
(1) Points 
      
    IN 
  
    LIKE (*) 
  
    ALMOST 
  
    SIMILAR 
  
      
      Incorrect. See Section 16 Lesson 1.  
  
      
 20.  The Concatenation Operator does which of the following?  Mark for Review 
(1) Points 
      
    Links rows of data together inside the database. 
  
    Links two or more columns or literals to form a single output column (*) 
  
    Is represented by the asterisk (*) symbol 
  
    Separates columns.