Author Question: Which of the following is NOT true when deciding when to use a surrogate key? A) The advantage ... (Read 22 times)

bclement10

  • Hero Member
  • *****
  • Posts: 560
Which of the following is NOT true when deciding when to use a surrogate key?
 
  A) The advantage with a surrogate key is that it can help prevent some cascading changes from primary to foreign key errors.
  B) A surrogate key can increase the file size and require more joins.
  C) If the key never has a foreign key, you need a surrogate key.
  D) If you have a primary key with a foreign key that may need to be changed frequently or more than normal, a surrogate key should be considered.

Question 2

A table is a collection of data or fields.
 
  Indicate whether the statement is true or false



snackralk

  • Sr. Member
  • ****
  • Posts: 363
Answer to Question 1

C

Answer to Question 2

TRUE



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

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?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

For a complete list of videos, visit our video library