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 47 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?

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?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Natural Hazards Natural Hazards
Increasing Costs of Natural Disasters Increasing Costs of Natural Disasters
How Oil and Natural Gas Form How Oil and Natural Gas Form
Activated Natural Killer Cell (NK Cell) Activated Natural Killer Cell (NK Cell)
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 Healing Timeline Natural Healing Timeline
Video: Mechanisms for chromosome movement Animation

For a complete list of videos, visit our video library