« previous next »

Author Question: What is the difference between shared locks and exclusive locks? What will be an ideal ... (Read 117 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
on: Jul 7, 2018
What is the difference between shared locks and exclusive locks?
 
  What will be an ideal response?

Question 2

Polymorphism occurs when the same operation may apply to two or more classes in different ways.
 
  Indicate whether the statement is true or false
Modern Database Management ¦ Hoffer, Venkataraman, Topi ¦ 13th Edition
Buy Test-Bank


rekilledagain

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 7, 2018
Answer to Question 1

Shared locks allow other transactions to read but not update a record or other resource. This is most useful when preventing another user from placing a lock on a record. An exclusive lock prevents another transaction from reading and writing a record until an update is done by the transaction that locked the record.

Answer to Question 2

TRUE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

jazziefee

  • Hero Member
  • *****
  • Posts: 505
Reply #2 on: Jul 7, 2018
Thank you :)


rekilledagain

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 7, 2018
Happy to help you


« previous next »
 

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

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?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Ancestral versus shared derived characters involving morphological traits. Ancestral versus shared derived characters involving morphological traits.
Cultures Ideal Body Types Cultures Ideal Body Types
How to Factor a Sum or Difference of Two Cubes How to Factor a Sum or Difference of Two Cubes
There Is a Difference between Natural and Added Sugars There Is a Difference between Natural and Added Sugars
Difference Between Solar and Sidereal Day Difference Between Solar and Sidereal Day
E9-23 Prepare income statements Explain the difference in operating income E9-23 Prepare income statements Explain the difference in operating income
Video: Attention Deficit Disorder (ADD)

For a complete list of videos, visit our video library