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1. 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 (*)

Modify the salary column by adding 300 and displaying the last name, salary and the new salary.

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.

2. You need to display all the values in the EMAIL column that contains the underscore (_) character as part of that email address. The WHERE clause in your SELECT statement contains the LIKE operator. What must you include in the LIKE operator?

Mark for Review (1) Points

The ESCAPE option (\) and one or more percent signs (%)

The (+) operator

A percent sign (%)

The ESCAPE option (\) (*)

Correct.

3. You need to display all the employees whose last name starts with the letters Sm . Which WHERE clause should you use? Mark for Review (1) Points

WHERE last_name LIKE 'Sm%' (*)

WHERE last_name LIKE '%Sm'

WHERE last_name LIKE '_Sm'

WHERE last_name LIKE 'Sm_'

Correct.

4. Evaluate this SELECT statement:

SELECT last_name, first_name, salary FROM employees;

How will the heading for the SALARY column appear in the display by default in Oracle Application Express? Mark for Review (1) Points

The heading will display with the first character capitalized and centered.

The heading will display with the first character capitalized and left justified.

The heading will display as uppercase and centered. (*)

The heading will display as uppercase and left justified.

Correct.

5. Evaluate this SELECT statement:

SELECT * FROM employeesWHERE 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 (*)

Correct.

6. 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 AND salary BETWEEN 10000 AND 25000

WHERE 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 25000 AND 10000 (*)

Correct.

7. You need to combine the FIRST_NAME and LAST_NAME columns in the EMPLOYEES table and display the columns as a combined character string. Which operator should you use? Mark for Review (1) Points

+

|

|| (*)

AND

Correct.

8. Where in a SQL statement can you not use arithmetic operators? Mark for Review (1) Points

SELECT

FROM (*)

WHERE

NONE

Correct.

9. 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.

Correct.

10. Which comparison operator searches for a specified character pattern? Mark for Review

(1) Points

IN

LIKE (*)

BETWEEN...AND...

IS NULL

Correct.11. Which clause would you include in a SELECT statement to restrict the data returned to only the employees in department 10? Mark for Review (1) Points

WHERE (*)

FROM

SELECT

IS

Correct.

12. When using the LIKE condition to search for _ symbols, which character can you use as the default ESCAPE option? Mark for Review (1) Points

%

^

&

\ (*)

Correct.

13. 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-00' AND '30-AUG-00';

(*)

SELECT last_name, first_name, hire_date FROM employees WHERE hire_date BETWEEN '30-AUG-00' AND '01-MAR-00';

SELECT last_name, first_name, hire_date FROM employees GROUP BY hire_date >= '01-MAR-00' and hire_date <= '30- AUG-00';

SELECT last_name, first_name, hire_date FROM employees AND hire_date >= '01-MAR-00' and hire_date <= '30-AUG- 00';

Correct.

Section 15(Answer all questions in this section)

14. You query the database with this SQL statement: SELECT * FROM students;

Why would you use this statement? Mark for Review (1) Points

To insert data

To view data (*)

To display the table structure

To delete data

Incorrect. See Section 15 Lesson 1.

15. Which SQL keyword specifies that an alias will be substituted for a column name in the output of a SQL query? Mark for Review (1) Points

AS (*)

OR

AND

SUBSTITUTE

Correct.

16. Which SQL statement will return an error? Mark for Review (1) Points

SEL * FR sky; (*)

select star from sky;

SELECT star FROM sky;

SELECT * FROM sky;

Correct.

17. If a SQL statement returns data from two or more tables, which SQL capability is being used? Mark for Review (1) Points

Selection

Projection

Joining (*)

Insertion

Correct.

18. 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.

19. In a SELECT clause, what is the result of 2 + 3 * 2? Mark for Review (1) Points

6

8 (*)

10

13

Correct.

20. 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.21. Why would this table name NOT work in an Oracle database? this_year_end+next_year Mark for Review (1) Points

Table names must begin with an alphabetic character

Too long

The Plus sign + is not allowed in object names (*)

None of the above

Incorrect. Refer to Section 11 Lesson 2.

22. The transformation from an ER diagram to a physical design involves changing terminology. Primary Unique Identifiers in the ER diagram become __________ and relationships become ____________. Mark for Review (1) Points

Foreign keys, Primary keys

Primary keys, Foreign keys (*)

Foreign keys, mandatory business rules

Unique Keys, Primary keys

Correct

23. 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

Correct

24. An "Arc Implementation" can be done just like any other Relationship - you simply add the required Foreign Keys. True or False? Mark for Review (1) Points

True

False (*)

Correct

25. A foreign key cannot refer to a primary key in the same table. True or False? Mark for Review (1) Points

True

False (*)

Correct

26. The explanation below is a column integrity constraint:

A column must contain only values consistent with the defined data format of the column. True or False? Mark for Review (1) Points

True (*)

False

Correct

27. Identify all of the incorrect statements that complete this sentence: A primary key is: (Choose three) Mark for Review (1) Points

(Choose all correct answers)

A single column that uniquely identifies each column in a table (*)

One or more columns in a table that uniquely identifies each row in that table

A set of columns in one table that uniquely identifies each row in another table (*)

Only one column that must be null (*)

Correct

28. Entity integrity refers to Mark for Review (1) Points

Tables always containing text data.

Tables always containing numeric data.

Columns having Primary Keys, Foreign Keys, Unique Keys and Check constraints defined in the database.

Tables having Primary Keys, Foreign Keys, Unique Keys and Check constraints defined in the database. (*)

Correct

29. A table must have at least one candidate key, as well as its primary key. True or False? Mark for Review (1) Points

True

False (*)

Correct

30. It is possible to implement non-transferability via a simple Foreign Key Relationship. True or False? Mark for Review (1) Points

True

False (*)

Correct31. Which statement about the default sort order is true? Mark for Review (1) Points

The lowest numeric values are displayed last.

The earliest date values are displayed first. (*)

Null values are displayed first.

Character values are displayed in reverse alphabetical order.

Correct.

32. The ORDER BY clause always comes last. True or False? Mark for Review (1) Points

True (*)

False

Correct.

33. Which logical operator returns TRUE if either condition is true? Mark for Review (1) Points

OR (*)

AND

NOT

BOTH

Correct.

34. Which comparison condition means ﾓ Less Than or Equal To"? Mark for Review (1) Points

"=)"

"+<"

">="

"<=" (*)

Correct.

35. Which clause would you include in a SELECT statement to sort the rows returned by the LAST_NAME column? Mark for Review (1) Points

ORDER BY (*)

WHERE

FROM

HAVING

Correct.

36. 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.

37. 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_name FROM 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.

38. 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

Reorder the clauses in the query. (*)

Remove the table aliases in the WHERE clause.

Remove the table aliases in the ORDER BY clause.

Include a HAVING clause.

Correct.

39. 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 > 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.

40. 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 (*)

AND

LIKE

BETWEEN... AND ...

Correct.41. 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

19

No rows will be returned

100, 101, 102, 103, 104, 107, 124, 141, 142, 143, 144, 149 (*)

200, 201, 202, 203, 204, 205, 206

Correct.

42. You query the database with this SQL statement:

SELECT price FROM products WHERE price IN(1, 25, 50, 250)

AND (price BETWEEN 25 AND 40 OR price > 50);

Which two values could the statement return? (Choose two.) Mark for Review (1) Points

(Choose all correct answers)

1

50

25 (*)

10

250 (*)

Correct.

43. 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

SELECT employee_id, last_name, first_name, salary 'Yearly Salary' (*)

FROM employees

WHERE salary IS NOT NULL

ORDER BY last_name, 3;

Correct.

44. Evaluate this SELECT statement:

SELECT last_name, first_name, department_id, manager_id FROM employees;

You need to sort data by manager id values and then alphabetically by employee last name and first name values. Which ORDER BY clause could you use? Mark for Review (1) Points

ORDER BY department_id, last_name

ORDER BY manager_id, last_name, first_name (*)

ORDER BY last_name, first_name, manager_id

ORDER BY manager_id, first_name, last_name

Correct.

45. Evaluate this SELECT statement:

SELECT first_name, last_name, email FROM employees ORDER BY last_name;

Which statement is true? Mark for Review (1) Points

The rows will not be sorted.

The rows will be sorted alphabetically by the LAST_NAME values. (*)

The rows will be sorted in reverse alphabetical order by the LAST_NAME values.

The rows will be sorted alphabetically by the FIRST_NAME and then the LAST_NAME values

Correct.

Section 12(Answer all questions in this section)

46. What command will return data from the database to you? Mark for Review (1) Points

FETCH

GET

SELECT (*)

RETURN

Correct.

47. What command can be used to create a new row in a table in the database? Mark for Review (1) Points

CREATE

NEW

ADD

INSERT (*)

Correct.

48. The _______ clause can be added to a SELECT statement to return a subset of the data. Mark for Review (1) Points

ANYWHERE

WHICH

WHERE (*)

EVERY

Correct.

49. 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

True

False (*)

Correct.

50. The f_customers table contains the following data: ID Name Address City State Zip

1 Cole Bee 123 Main Street Orlando FL 328382 Zoe Twee 1009 Oliver Avenue BostonMA 021163 Sandra Lee 22 Main Street Tampa FL 32444

If 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

0

3

1 (*)

2

Correct.