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Managing Multiuser Databases
Which of the following refers to a cursor type where changes of any type and from any source are visible?
Forward only
Static
Keyset
Dynamic
Correct Answer:
Dynamic
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Managing Multiuser Databases
Which of the following occurs when one transaction reads a changed record that has not been committed to the database?
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?
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.
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