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

Author Question: Recovering a database via rollback involves ________. A) restoring the database from the save and ... (Read 219 times)

JGIBBSON

  • Hero Member
  • *****
  • Posts: 538
Recovering a database via rollback involves ________.
 
  A) restoring the database from the save and reprocessing all the transactions since the save
  B) restoring the database from the save and reapplying all the changes made by transactions since the save
  C) undoing the changes made by erroneous or partially processed transactions and restarting the valid transactions that were in process at the time of the failure
  D) re-creating the database by re-entering all of the data from the beginning and, then reprocessing all of the transactions

Question 2

In IDEF1X, extended E-R model N:M relationships are called ________.
 
  A) nonidentifying connection relationships
  B) identifying connection relationships
  C) nonspecific relationships
  D) category clusters



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ashely1112

  • Sr. Member
  • ****
  • Posts: 347
Answer to Question 1

C

Answer to Question 2

C




JGIBBSON

  • Member
  • Posts: 538
Reply 2 on: Jul 7, 2018
Thanks for the timely response, appreciate it


Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

For a complete list of videos, visit our video library