This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following best defines a natural key? A) It is an arbitrary, random key with no ... (Read 50 times)

kamilo84

  • Sr. Member
  • ****
  • Posts: 495
on: Jul 7, 2018
Which of the following best defines a natural key?
 
  A) It is an arbitrary, random key with no business meaning
  B) It is an attribute that naturally belongs to the entity
  C) It is made up of two or more attributes combined
  D) It is an attribute that could potentially be used for a primary key

Question 2

State transition diagrams illustrate a succession of interactions between classes or object instances over time.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lkoler

  • Sr. Member
  • ****
  • Posts: 358
Reply #1 on: Jul 7, 2018
Answer to Question 1

B

Answer to Question 2

FALSE


kamilo84

  • Sr. Member
  • ****
  • Posts: 495
Reply #2 on: Jul 7, 2018
Correct answers!


lkoler

  • Sr. Member
  • ****
  • Posts: 358
Reply #3 on: Jul 7, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Natural capital degradation Natural capital degradation
Random Random
When a Tornado Strikes: Social Organization Following a Natural Disaster When a Tornado Strikes: Social Organization Following a Natural Disaster
Natural Products Natural Products
Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ... Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ...
Natural gas is a cleaner fuel than coal Natural gas is a cleaner fuel than coal
Video: Conduction of action potentials

For a complete list of videos, visit our video library