Curioustab

Home » Database » Managing Multiuser Databases

Which of the following occurs when a transaction rereads data and finds new rows that were inserted by a command transaction since the prior read?

Nonrepeatable read
Phantom read
Dirty read
Consistent read

Correct Answer: Phantom read

← Previous Question Next Question→

More Questions from Managing Multiuser Databases

In this instance, dirty reads are disallowed, while nonrepeatable reads and phantom reads are allowed.
The advantage of optimistic locking is that:
A transaction for which all committed changes are permanent is called:
A cursor type in which the application sees the data as they were at the time the cursor was opened is called:
A cursor type in which the application can only move forward through the recordset is called:
Locks placed by command are called ________ .
Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?
Two transactions that run concurrently and generate results that are consistent with the results that would have occurred if they had run separately are referred to as serializable transactions.
A point of synchronization between the database and the transaction log is generally referred to as a stop point.
A phantom read occurs when a transaction rereads data it has previously read and finds modifications or deletions caused by a committed transaction.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion