WGU C170 - PRE-ASSESSMENT LATEST 2021 GRADED A+
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?
One-to-o
...
WGU C170 - PRE-ASSESSMENT LATEST 2021 GRADED A+
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?
One-to-one
One-to-many
Many-to-many One-to-one binary Correct Answer- Many-to-many
Which two examples are attributes?
Choose 2 answers
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?
Restrict
Cascade
Matching Set-to-Null Correct Answer- Set-to-Null
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?
Choose 2 answers
member_id
last name
suffix
expiration
email
city 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?
Move the data from the third column into the first column.
Move the data from the third column into its own table.
Move the data from the first two columns into separate tables. Move the data from the second column into the third column. 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?
First normal form
Second normal form
Third normal form Fourth normal form 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?
Foreign
Primary
Compound Composite Correct Answer- Foreign
Which command creates a database only if it does not already exist?
IF NOT EXISTS db_name ;
CREATE DATABASE IF NEW db_name ;
CREATE DATABASE IF NOT EXISTS db_name ; IF NOT EXISTS CREATE DATABASE db_name ; Correct Answer- 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?
WHERE PRODCOST=20;
AND PRODCOST=20;
WHERE PRODCOST>=20; AND PRODCOST>=20; Correct Answer- WHERE PRODCOST=20;
What does WHERE identify in a basic SQL SELECT statement?
The associative entity
The rows to be included
A table's intersection data A range of included columns Correct Answer- The rows to be i
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