WGU C170 - Pre-Assessment: Data Management -
Applications (FJO1) (PFJO)
A salesperson is authorized to sell many products and a product can be sold by many
salespersons.
Which kind of binary relationship does this scenario describe? Correct Answer: Many-to-many
Which two examples are attributes?
A person attending a meeting
An employee number
A sales meeting
A meeting code Correct Answer: An employee number
A meeting code
Which delete rule sets column values in a child table to a missing value when the matching data
is deleted from the parent table? Correct Answer: Set-to-Null
In this entity-relationship diagram, Salesperson 361 is related to two customers. The table
follows the restrict delete rule.
What happens if someone tries to delete Salesperson 361 from the customer records? Correct
Answer: The delete is prohibited.
Refer to the given SQL statement.
CREATE TABLE member
(
member_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
PRIMARY KEY (member_id),
last_name VARCHAR(20) NOT NULL,
first_name VARCHAR(20) NOT NULL,
suffix VARCHAR(5) NULL,
expiration DATE NULL,
email VARCHAR(100) NULL,
street VARCHAR(50) NULL,
city VARCHAR(50) NULL,
state VARCHAR(2) NULL,
zip VARCHAR(10) NULL,
phone VARCHAR(20) NULL,
interests VARCHAR(255) NULL
);
Which two columns are created as something other than variable-length strings in this statement?
Correct Answer: member_id
, expiration
Employee_ID Employee_Name Office_Address
12342 Jacob 54123 Main Street
12346 Michael 354 Center Avenue
12846 Ethan 54123 Main Street
12887 Joshua 54123 Main Street
12894 Daniel 354 Center Avenue
13097 Alexander 354 Center Avenue
13112 Anthony 54123 Main Street
13411 William 354 Center Avenue
13987 Christopher 354 Center Avenue
13998 Matthew 54123 Main Street
This database table has ten different employee numbers in the first column. Employee_ID is the
primary key. In addition, it has ten different names in the second column and two office
addresses repeated five times each in the third column.
Which action should be used to translate this data into third normal form? Correct Answer:
Move the data from the third column into its own table.
A database manager starts to convert data that has been normalized into a form that conforms to
the relational model. A simple primary key has been established and all the repeating groups
have been deleted.
In which form is this data? Correct Answer: Second normal form
Two attributes in two related tables have the exact same domain of values. The attribute is a
primary key in one table.
Which kind of key is the attribute in the other table? Correct Answer: Foreign
When a product is deleted from the product table, all corresponding rows for the product in the
pricing table are deleted automatically as well.
What is this referential integrity technique called? Correct Answer: Cascaded delete
Refer to the given information.
CREATE TABLE 'test1' (
contact_id INT(10),
name VARCHAR(10),
event_id INT(5),
Which command should be added to the end to make the event_id attribute the primary key
within a CREATE TABLE statement?
Applications (FJO1) (PFJO)
A salesperson is authorized to sell many products and a product can be sold by many
salespersons.
Which kind of binary relationship does this scenario describe? Correct Answer: Many-to-many
Which two examples are attributes?
A person attending a meeting
An employee number
A sales meeting
A meeting code Correct Answer: An employee number
A meeting code
Which delete rule sets column values in a child table to a missing value when the matching data
is deleted from the parent table? Correct Answer: Set-to-Null
In this entity-relationship diagram, Salesperson 361 is related to two customers. The table
follows the restrict delete rule.
What happens if someone tries to delete Salesperson 361 from the customer records? Correct
Answer: The delete is prohibited.
Refer to the given SQL statement.
CREATE TABLE member
(
member_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
PRIMARY KEY (member_id),
last_name VARCHAR(20) NOT NULL,
first_name VARCHAR(20) NOT NULL,
suffix VARCHAR(5) NULL,
expiration DATE NULL,
email VARCHAR(100) NULL,
street VARCHAR(50) NULL,
city VARCHAR(50) NULL,
state VARCHAR(2) NULL,
zip VARCHAR(10) NULL,
phone VARCHAR(20) NULL,
interests VARCHAR(255) NULL
);
Which two columns are created as something other than variable-length strings in this statement?
Correct Answer: member_id
, expiration
Employee_ID Employee_Name Office_Address
12342 Jacob 54123 Main Street
12346 Michael 354 Center Avenue
12846 Ethan 54123 Main Street
12887 Joshua 54123 Main Street
12894 Daniel 354 Center Avenue
13097 Alexander 354 Center Avenue
13112 Anthony 54123 Main Street
13411 William 354 Center Avenue
13987 Christopher 354 Center Avenue
13998 Matthew 54123 Main Street
This database table has ten different employee numbers in the first column. Employee_ID is the
primary key. In addition, it has ten different names in the second column and two office
addresses repeated five times each in the third column.
Which action should be used to translate this data into third normal form? Correct Answer:
Move the data from the third column into its own table.
A database manager starts to convert data that has been normalized into a form that conforms to
the relational model. A simple primary key has been established and all the repeating groups
have been deleted.
In which form is this data? Correct Answer: Second normal form
Two attributes in two related tables have the exact same domain of values. The attribute is a
primary key in one table.
Which kind of key is the attribute in the other table? Correct Answer: Foreign
When a product is deleted from the product table, all corresponding rows for the product in the
pricing table are deleted automatically as well.
What is this referential integrity technique called? Correct Answer: Cascaded delete
Refer to the given information.
CREATE TABLE 'test1' (
contact_id INT(10),
name VARCHAR(10),
event_id INT(5),
Which command should be added to the end to make the event_id attribute the primary key
within a CREATE TABLE statement?
