Database-Management-System
|
Question 243
|
Which of the following scenarios may lead to an irrecoverable error in a database system?
|
A transaction writes a data item after it is read by an uncommitted transaction
|
|
|
A transaction reads a data item after it is read by an uncommitted transaction
|
|
|
A transaction reads a data item after it is written by a committed transaction
|
|
|
A transaction reads a data item after it is written by an uncommitted transaction
|
Correct Answer: D