Author Question: An entity that associates the instances of one or more entity types and contains attributes specific ... (Read 71 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?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

For a complete list of videos, visit our video library