WGU - Pre-Assessment: Data
Management - Applications (FJO1)
(PFJO) Exam questions And Answers
Already Passed (LATEST UPDATES)
A salesperson is
... [Show More] authorized to sell many products and a product can be sold by many
salespersons.
Which kind of binary relationship does this scenario describe? - answers Many-to-many
Which two examples are attributes?
A person attending a meeting
An employee number
A sales meeting
A meeting code - answers 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? - answers 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? -
answers 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? - answers 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? - answers
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? - answers 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? - answers 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? - answers 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?
PRIMARY KEY = event_id);
PRIMARY KEY (event_id));
(PRIMARY KEY: event_id);
PRIMARY (event_id)' - answers PRIMARY KEY (event_id));
What does the clause PRIMARY KEY followed by a field name in parentheses mean in
a CREATE TABLE statement? - answers The column, in parentheses, is the primary
key for the table.
Which statement should be used so that it assigns a foreign key to the customer
name? - answers FOREIGN KEY ( customer_name ) REFERENCES table_name (
customer_name )
Which command creates a database only if it does not already exist? - answers
CREATE DATABASE IF NOT EXISTS db_name ;
Refer to the given SQL statement.
SELECT PRODNUM, PRODNAME
FROM PRODUCT
Which line should be added to the end of the statement to return the product numbers
and product names for products that cost 20 dollars? - answers WHERE
PRODCOST=20;
What does WHERE identify in a basic SQL SELECT statement? - answers The rows
to be included
Refer to the given SQL statement.
SELECT EMPNUM
FROM EMPLOYEE
Which line added to the end of the statement returns employee numbers of at least
1000? - answers WHERE EMPNUM >= 1000;
Refer to the given SQL statement.
SELECT PRODNUM, SUM(QUANTITY)
FROM SALESPERSON [Show Less]