When referential integrity is in effect you can only change a ...

[fagboi]

When referential integrity is in effect you can only change a foreign key value to one that exists in the primary key table.
 
  Indicate whether the statement is true or false

Question 2

Explain some of the advantages of Cloud database services.
 
  What will be an ideal response?

[eliasc0401]

Answer to Question 1

TRUE

Answer to Question 2

Cloud services offer companies the opportunity to expand their infrastructure without worrying about maintenance and the expense of the equipment. Cloud services are especially useful for handling peak loads. For example, a retailer may have twice the normal load during the Christmas holiday. Rather than paying for infrastructure that is idle most of the year, they can purchase cloud services to handle the peak.