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

Author Question: Describe the reason why it is acceptable to have null foreign key, but it is unacceptable to have a ... (Read 57 times)

rosent76

  • Hero Member
  • *****
  • Posts: 516
on: Apr 8, 2019
Describe the reason why it is acceptable to have null foreign key, but it is unacceptable to have a null primary key. Use the concept of entity integrity rule and referential integrity rule in your answer.
Accounting Information Systems ¦ Romney, Steinbart ¦ 14th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by rosent76 on Apr 8, 2019

matt95

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Apr 8, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 45% of students answer this correctly


rosent76

  • Hero Member
  • *****
  • Posts: 516
Reply #2 on: Apr 8, 2019
TY


matt95

  • Sr. Member
  • ****
  • Posts: 317
Reply #3 on: Apr 8, 2019
You're welcome


« previous next »
 

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

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?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Four main models that describe the relationship between ecosystem function and biodiversity. Four main models that describe the relationship between ecosystem function and biodiversity.
Acceptable ranges for adults Acceptable ranges for adults
In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai
Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa
The Titanic carried only twenty lifeboats, a reason why so many perished in 1912. The Lusitania (abo The Titanic carried only twenty lifeboats, a reason why so many perished in 1912. The Lusitania (abo
Describe the Conceptual Forecasting Framework in your own words. Describe the Conceptual Forecasting Framework in your own words.
Video: T cell receptors

For a complete list of videos, visit our video library