**PLEASE ANSWER ALL QUESTIONS**

Question 26 (3 points)

Which one of the following can be used as a primary key in a car manufacturing database to uniquely identify a car?

Question 26 options:

A)	The car color

B)	The car make and year

C)	The vehicule identification number (VIN)

D)	The car model

Question 27 (3 points)

A defined relationship in a relationshional data base in which one record in a table can match many records in another table is known as:

Question 27 options:

A)	One-to-many relationship

B)	Many-to-many relationship

C)	One-to-one relationship

D)	All of the above

Question 28 (3 points)

Which of the following is NOT an example of an internal database?

Question 28 options:

A)	Industry information

B)

Customer

C)

Inventory

D)

Marketing

Question 29 (3 points)

A defined relationship in relational data base in which only one record in a table will match exactly one record in another table is known as:

Question 29 options:

A)	One-to-many relationship

B)	Many-to-many relationship

C)	One-to-one relationship

D)

Both A&C

Question 30 (3 points)

Which one of the following is true about data marts?

Question 30 options:

A)	Data marts are subsets of data warehouses

B)	Data marts are low cost than data warehouses

C)	Data marts are easy to maintain than data warehousing

D)	All of the above