This topic contains a solution. Click here to go to the answer

Author Question: In many-to-many relationships in a relational database design, ________. A) the key of the child ... (Read 68 times)

crobinson2013

  • Hero Member
  • *****
  • Posts: 535
In many-to-many relationships in a relational database design, ________.
 
  A) the key of the child is placed as a foreign key into the parent
  B) the key of the parent is placed as a foreign key into the child
  C) the keys of both tables are placed in a third table
  D) the keys of both entity tables are placed in each other

Question 2

Discriminators can be ________.
 
  A) attributes
  B) entities
  C) relationships
  D) subtypes



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Bison

  • Sr. Member
  • ****
  • Posts: 342
Answer to Question 1

C

Answer to Question 2

A




crobinson2013

  • Member
  • Posts: 535
Reply 2 on: Jul 7, 2018
Wow, this really help


amit

  • Member
  • Posts: 364
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

For a complete list of videos, visit our video library