Author Question: A composite identifier is defined as a composite attribute that is an identifier. Indicate ... (Read 143 times)

segrsyd

  • Hero Member
  • *****
  • Posts: 530
A composite identifier is defined as a composite attribute that is an identifier.
 
  Indicate whether the statement is true or false

Question 2

A surrogate key is an artificial column that is added to a relation to be its primary key.
 
  Indicate whether the statement is true or false



fwbard

  • Sr. Member
  • ****
  • Posts: 325
Answer to Question 1

FALSE

Answer to Question 2

TRUE



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

fwbard

  • Sr. Member
  • ****
  • Posts: 325

 

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

For a complete list of videos, visit our video library