Author Question: Explain deletion anomalies and provide examples. What will be an ideal ... (Read 62 times)

geoffrey

  • Hero Member
  • *****
  • Posts: 880
Explain deletion anomalies and provide examples.
 
  What will be an ideal response?

Question 2

A question that has a fixed answer or a fixed set of answers is called:
 
  A) An open-ended question
  B) A technical question
  C) A closed question
  D) A questionnaire



Eunice618

  • Sr. Member
  • ****
  • Posts: 350
Answer to Question 1

Deletion anomalies occur when deleting a record accidently causes other information to be lost. For example, if album and artist information was kept in the same table, removing a particular album might also remove any reference to the artist in the database.

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

For a complete list of videos, visit our video library