final exam semester 1

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

Section 11(Answer all questions in this section)

1. One-to-One relationships are transformed into Check Constraints in the tables created at either end of that relationship. True or False? Mark for

Review (1) Points

TrueFalse (*)

Correct

2. The Oracle Database can implement a many-to-many relationship. You simply create two foreign keys between the two tables. True or False? Mark for

Review (1) Points

TrueFalse (*)

Correct

3. When translating an arc relationship to a physical design, you must turn the arc relationships into foreign keys. Assuming you are implementing an Exclusive Design, you must also create two Unique Key Constraints to ensure the Arc is implemented correctly. True or False?

Mark for Review

(1) Points

TrueFalse (*)

Correct

4. The transformation from an ER diagram to a physical design involves changing terminology. Secondary Unique Identifiers become Mark for

Review (1) Points

ColumnsTablesUnique Constraints (*)Primary Key Constraints

Incorrect. Refer to Section 11 Lesson 2.

5. In a physical data model, an attribute becomes a _____________. Mark for Review

(1) Points

TableForeign KeyConstraintColumn (*)

Correct

6. In an Oracle database, why would 1_TABLE not work as a table name? Mark for Review

(1) Points

The database does not understand all capital letters.There is no problem here. You can create a table called 1_TABLE.Object names must not start with a number. They must begin with a letter. (*)TABLE is a reserved word.


7. The explanation below is a column integrity constraint. True or False?

A column must contain only values consistent with the defined data format of the column.

Mark for Review

(1) Points

True (*)False

Correct

8. Foreign keys must be null. True or False? Mark for Review

(1) Points

TrueFalse (*)

Correct

9. A table must have a primary key. True or False? Mark for Review

(1) Points

TrueFalse (*)

Correct

10. The explanation below is a User Defined integrity rule and must, therefore, be manually coded; the Database cannot enforce this rule automatically. True or False?

A primary key must be unique, and no part of the primary key can be null.

Mark for Review

(1) Points

TrueFalse (*)

Correct



11. The text below is an example of what constraint type?

If the number of BOOKS lent to a BORROWER in the LIBRARY exceeds 5, then we must send him a letter requesting the return of the BOOKS; this will require extra programming to enforce.

Mark for Review

(1) Points

Entity integrityUser-defined integrity (*)Column integrityReferential integrity



12. System Documentation is developed right at the end once the system has gone live and users have been using it for a little while. You are more likely Mark for

to get it correct that way. True or False? Review (1) Points

TrueFalse (*)


13. In the Analysis phase, the tables are created and populated with test data. True or False? Mark for

Review (1) Points

TrueFalse (*)

Correct.

14. Once you have created a table, it is not possible to alter the definition of it. If you need to add a new column you must delete the table definition and create a new, correct table. True or False?

Mark for Review

(1) Points

TrueFalse (*)


15. The f_customers table contains the following data:ID Name Address City State Zip1 Cole Bee 123 Main Street Orlando FL 328382 Zoe Twee 1009 Oliver Avenue Boston MA 021163 Sandra Lee 22 Main Street Tampa FL 32444If you run the following statement: DELETE FROM F_CUSTOMERS WHERE ID <= 2;

How many rows will be left in the table?

Mark for Review

(1) Points

031 (*)2

Correct.

16. The DESCRIBE command returns all rows from a table. True or False? Mark for

Review (1) Points

TrueFalse (*)

Correct.

17. The _______ clause can be added to a SELECT statement to return a subset of the data. Mark for

Review (1) Points

ANYWHEREWHICHWHERE (*)EVERY

Correct.

18. What command will return data from the database to you? Mark for Review

(1) Points

FETCHGETSELECT (*)RETURN

Correct.


19. When you use the SELECT clause to list one or two columns only from a table and no WHERE clause, which SQL capability is used? Mark for

Review (1) Points

Joining onlySelection onlyProjection only (*)

Projection and Selection

Correct.

20. If a SQL statement returns data from two or more tables, which SQL capability is being used? Mark for

Review (1) Points

SelectionProjectionJoining (*)Insertion

Incorrect. See Section 15 Lesson 1.



21. Which statement best describes how arithmetic expressions are handled? Mark for Review

(1) Points

Addition operations are handled before any other operations.Multiplication and subtraction operations are handled before any other operations.Multiplication and addition operations are handled before subtraction and division operations.Division and multiplication operations are handled before subtraction and addition operations. (*)

Correct.

22. The EMPLOYEES table contains these columns:

SALARY NUMBER(7,2) BONUS NUMBER(7,2) COMMISSION_PCT NUMBER(2,2)

All three columns contain values greater than zero.There is one row of data in the table and the values are as follows: Salary = 500, Bonus = 50, Commission_pct = .5

Evaluate these two SQL statements:

1. SELECT salary + bonus + commission_pct * salary - bonus AS income

Mark for Review

(1) Points

FROM employees;

2. SELECT (salary + bonus ) + commission_pct * (salary - bonus) income FROM employees;

What will be the result?

Statement 1 will return a higher value than statement 2.Statement 2 will return a higher value than statement 1. (*)Statement 1 will display a different column heading.One of the statements will NOT execute.

Correct.

23. You want to create a list of all albums that have been produced by the company. The list should include the title of the album, the artist's name, and the date the album was released. The ALBUMS table includes the following columns:

ALB_TITLE VARCHAR2(150) NOT NULL ALB_ARTIST VARCHAR2(150) NOT NULL ALB_DATE DATE NOT NULL

Which statement can you use to retrieve the necessary information?

Mark for Review

(1) Points

SELECT * FROM albums;

(*)SELECT alb_title, alb_artist, alb_dates FROM album;SELECT alb_title, alb_artist, alb_dates FROM albums;SELECT alb_title; alb_artist; alb_date FROM albums;

Correct.

24. The SELECT statement retrieves information from the database. In a SELECT statement, you can do all of the following EXCEPT: Mark for

Review (1) Points

ProjectionManipulation (*)JoiningSelection



25. 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 (*) symbolSeparates columns.

Correct.

26. Which symbol represents the not equal to condition? Mark for Review

(1) Points

#+'!= (*)~

Correct.

27. You need to display employees whose salary is in the range of 10000 through 25000 for employees in department 50 . What does the WHERE clause look like?

Mark for Review

(1) Points

WHERE department_id < 50 <br> AND salary BETWEEN 10000 AND 25000WHERE department_id > 50 AND salary BETWEEN 10000 AND 25000 WHERE department_id = 50 AND salary BETWEEN 25001 AND 10001 WHERE department_id = 50 AND salary BETWEEN 10000 AND 25000 (*)


28. Which statement best describes how column headings are displayed by default in Oracle Application Express: Mark for

Review (1) Points

Column headings are displayed left-justified and in lowercase.Column headings are displayed left-justified and in uppercase.Column headings are displayed centered and in uppercase. (*)Column headings are displayed centered and in mixed case.

Correct.

29. You need to display employees with salaries that are at least 30000 or higher. Which comparison operator should you use? Mark for

Review (1) Points

>"=>">= (*)!=

Correct.

30. Which of the following elements cannot be included in a WHERE clause? Mark for Review

(1) Points

A column alias (*)A column nameA comparison conditionA constant




31. You want to determine the orders that have been placed by customers who reside in the city of Chicago. You write this partial SELECT statement:

SELECT orderid, orderdate, total

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(1) Points

FROM orders;

What should you include in your SELECT statement to achieve the desired results?

AND city = Chicago;AND city = 'Chicago';WHERE city = 'Chicago'; (*)WHERE city = Chicago;

Correct.

32. What will be the result of the SELECT statement and what will display?

SELECT last_name, salary, salary + 300 FROM employees;

Mark for Review

(1) Points

Display the last name, salary, and the results of adding 300 to each salary for all the employees (*)Display the last name and salary of all employees who have a salary greater than 300.Modify the salary column by adding 300 and only display the last name and the new salary.Display the last name, salary, and the results of adding 300 to the salary of the first employee row

Correct.

33. 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;

Correct.

34. 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;


35. If you write queries using the BETWEEN operator, it does not matter in what order you enter the values, i.e. BETWEEN low value AND high value will give the same result as BETWEEN high value and low value. True or False?

Mark for Review

(1) Points

TrueFalse (*)


36. The EMPLOYEES table includes these columns:

EMPLOYEE_ID NUMBER(4) NOT NULL LAST_NAME VARCHAR2(15) NOT NULL FIRST_NAME VARCHAR2(10) NOT NULL HIRE_DATE DATE NOT NULL

You want to produce a report that provides the last names, first names, and hire dates of those employees who were hired between March 1, 2000, and August 30, 2000. Which statements can you issue to accomplish this task?

Mark for Review

(1) Points

SELECT last_name, first_name, hire_date FROM employees WHERE hire_date BETWEEN '01-MAR-2000' AND '30-AUG-2000';

(*)SELECT last_name, first_name, hire_date FROM employees WHERE hire_date BETWEEN '30-AUG-2000' AND '01-MAR-2000';SELECT last_name, first_name, hire_date FROM employees GROUP BY hire_date >= '01-MAR-2000' and hire_date <= '30- AUG-2000';SELECT last_name, first_name, hire_date FROM employees AND hire_date >= '01-MAR-2000' and hire_date <= '30-AUG-2000';

Correct.


37. You need to change the default sort order of the ORDER BY clause so that the data is displayed in reverse alphabetical order. Which keyword should you include in the ORDER BY clause?

Mark for Review

(1) Points

DESC (*)ASCSORTCHANGE

Correct.

38. From left to right, what is the correct order of Precedence? Mark for Review

(1) Points

Arithmetic, Concatenation, Comparison, OR (*)NOT, AND, OR, ArithmeticArithmetic, NOT, Logical, ComparisonArithmetic, NOT, Concatenation, Logical

Correct.

39. Which comparison condition means "Less Than or Equal To"? Mark for Review

(1) Points

"=)""+<"">=""<=" (*)

Correct.

40. The ORDER BY clause always comes last. True or False? Mark for Review

(1) Points

True (*)False

Correct.



41. Which statement about the ORDER BY clause is true? Mark for Review

(1) Points

You can use a column alias in the ORDER BY clause. (*)The default sort order of the ORDER BY clause is descending.The ORDER BY clause can only contain columns that are included in the SELECT list.The ORDER BY clause should immediately precede the FROM clause in a SELECT statement

Correct.

42. Which statement about the logical operators is true? Mark for Review

(1) Points

The order of operator precedence is AND, OR, and NOT.The order of operator precedence is AND, NOT, and OR.The order of operator precedence is NOT, OR, and AND.The order of operator precedence is NOT, AND, and OR. (*)

Correct.

43. Evaluate this SELECT statement:

SELECT * FROM employees WHERE department_id = 34 OR department_id = 45 OR department_id = 67;

Which operator is the equivalent of the OR conditions used in this SELECT statement?

Mark for Review

(1) Points

IN (*)

ANDLIKEBETWEEN ... AND ...

Correct.

44. 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 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 the LAST_NAME column only.The results will be sorted ascending by LAST_NAME and FIRST_NAME only.The results will be sorted ascending by LAST_NAME, FIRST_NAME, and SALARY.

Correct.

45. You need to create a report to display all employees that were hired on or before January 1, 1996. The data should display in this format:Employee Start Date and Salary14837 - Smith 10-MAY-1992 / 5000Which SELECT statement could you use?

Mark for Review

(1) Points

SELECT employee_id || - || last_name "Employee", hire_date || / || salary "Start Date and Salary FROM employeesWHERE hire_date <= '01-JAN-1996';SELECT employee_id ||' '|| last_name "Employee", hire_date ||' '|| salary "Start Date and Salary" FROM employees WHERE hire_date <= 01-JAN-1996';SELECT employee_id ||'"- "|| last_name "Employee", hire_date ||" / "|| salary Start Date and Salary" FROM employees WHERE hire_date <= '01-JAN-1996';SELECT employee_id ||' - '|| last_name 'Employee', hire_date ||' / '|| salary 'Start Date and Salary" FROM employees WHERE hire_date <= '01-JAN-1996';SELECT employee_id ||' - '|| last_name "Employee", hire_date ||' / '|| salary "Start Date and Salary" FROM employeesWHERE hire_date <= '01-JAN-1996';

(*)

Correct.

46. 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 alphabetically only.The results are sorted numerically and then alphabetically.The results are sorted alphabetically and then numerically. (*)

Correct.

47. 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

19No rows will be returned100, 101, 102, 103, 104, 107, 124, 141, 142, 143, 144, 149 (*)200, 201, 202, 203, 204, 205, 206

Correct.


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 > 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;

(*)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 BETWEEN 24999.99 AND 100000.01 AND team_id BETWEEN 1200 AND 1500 ORDER BY team_id DESC, salary DESC;

Correct.

49. The EMPLOYEES table contains these columns:

EMPLOYEE_ID NUMBER(9) PK LAST_NAME VARCHAR2(25) FIRST_NAME VARCHAR2(25)DEPARTMENT_ID NUMBER(9) Compare these two SQL statements:

1. SELECT DISTINCT department_id DEPT, last_name, first_name FROM employees ORDER BY department_id;

2. SELECT department_id DEPT, last_name, first_nameFROM employees ORDER BY DEPT;

How will the results differ?

Mark for Review

(1) Points

One of the statements will return a syntax error.One of the statements will eliminate all duplicate DEPARTMENT_ID values.There is no difference in the result between the two statements.The statements will sort on different column values. (*)

Incorrect! See Section 17 Lesson 3.


PLAYERS TABLE: LAST_NAME VARCHAR2 (20) FIRST_NAME VARCHAR2 (20) SALARY NUMBER(8,2) TEAM_ID NUMBER(4)

Mark for Review

(1) Points

MANAGER_ID NUMBER(9) POSITION_ID NUMBER(4)

You want to display all players' names with position 6900 or greater.You want the players names to be displayed alphabetically by last name and then by first name.Which statement should you use to achieve the required results?

SELECT last_name, first_name FROM players WHERE position_id >= 6900 ORDER BY last_name, first_name;

(*)SELECT last_name, first_name FROM players WHERE position_id > 6900 ORDER BY last_name, first_name;SELECT last_name, first_name FROM players WHERE position_id <= 6900 ORDER BY last_name, first_name;SELECT last_name, first_name FROM players WHERE position_id >= 6900 ORDER BY last_name DESC, first_name;

Correct.

final exam semester 1

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