Author Question: An entity that associates the instances of one or more entity types and contains attributes specific ... (Read 72 times)

laurencescou

  • Hero Member
  • *****
  • Posts: 593
An entity that associates the instances of one or more entity types and contains attributes specific to the relationships is called a(n):
 
  A) associative entity.
  B) connecting entity.
  C) intersectional entity.
  D) all of the above.

Question 2

The entity integrity rule states that:
 
  A) no primary key attribute can be null.
  B) referential integrity must be maintained across all entities.
  C) each entity must have a primary key.
  D) a primary key must have only one attribute.


polinasid

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

A

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

For a complete list of videos, visit our video library