Author Question: What is the difference between shared locks and exclusive locks? What will be an ideal ... (Read 116 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
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


rekilledagain

  • Sr. Member
  • ****
  • Posts: 337
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


 

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

For a complete list of videos, visit our video library