« previous next »

Author Question: Which of the following is not true of MUST constraint? A) It may be needed in ternary ... (Read 35 times)

ss2343

  • Hero Member
  • *****
  • Posts: 548
on: Jul 7, 2018
Which of the following is not true of MUST constraint?
 
  A) It may be needed in ternary relationships to enforce special business rules.
  B) It can be expressed directly in a relational model.
  C) It must be enforced by program code.
  D) It requires that one entity be combined with another entity.

Question 2

When examining data values as a part of assessing table structure, you should try to determine the table's primary key.
 
  Indicate whether the statement is true or false


Dinolord

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 7, 2018
Answer to Question 1

B

Answer to Question 2

TRUE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

True Forget-Me-Not True Forget-Me-Not
Choose the telephone unit that offers the features needed in your office. Choose the telephone unit that offers the features needed in your office.
An Internet connection is usually needed to perform updates although some vehicle manufacturers use ... An Internet connection is usually needed to perform updates although some vehicle manufacturers use ...
True Dover Sole True Dover Sole
how much energy is needed to heat 77.0g H2O(s) from -10.0 C to 0.0 C? how much energy is needed to heat 77.0g H2O(s) from -10.0 C to 0.0 C?
Video: Bipolar Disorder

For a complete list of videos, visit our video library