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

Author Question: Explain the implications of enforcing referential integrity for Insert, Update and Delete ... (Read 117 times)

rachel9

  • Sr. Member
  • ****
  • Posts: 495
Explain the implications of enforcing referential integrity for Insert, Update and Delete statements.
 
  What will be an ideal response?

Question 2

A schema consists of ownership of database objects.
 
  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

trampas

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

Enforcing referential integrity has an effect on three common database actions. It forces a user to insert data in a certain order. There must be an existing value in the primary key table before related records can be entered in the foreign key table. It also effects updates. One cannot change a primary key that has related records in a child or foreign key table. One also cannot update a foreign key column in the child table except to change it to the value of an existing primary key in the primary key table. When it comes to deletes, one cannot delete a record from a primary key table until all the related records in the foreign key table have been deleted first.

Answer to Question 2

TRUE




rachel9

  • Member
  • Posts: 495
Reply 2 on: Jul 7, 2018
Great answer, keep it coming :)


juliaf

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

For a complete list of videos, visit our video library