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 bin
...
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 Ans- 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 Ans- 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 Ans- 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 Ans- 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. Ans- 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 Ans- 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 Ans- 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 ; Ans- 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; Ans- 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 Ans- 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?
WHERE EMPNUM = 1000+;
WHERE EMPNUM > 1000;
WHERE EMPNUM => 1000;
WHERE EMPNUM >= 1000; Ans- WHERE EMPNUM >= 1000;
Refer to the given SQL statement.
SELECT PRODNUM, SUM(QUANTITY
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