Dirty read, nonrepeatable, and phantom reads are not possible in this instance.
Answer: D
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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.
Answer: A
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Which of the following refers to a cursor type that when the cursor is opened, a primary key value is saved for each row in the recordset; when the application accesses a row, the key is used to fetch the current values of the row?
Answer: C
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A transaction in which either all of the database actions occur or none of them do is called:
Answer: A
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Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?
Answer: A
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Which of the following locks the item from access of any type?
Answer: C
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The transaction log contains a copy of every database record (or page) after it has changed. These records are called before images.
Answer: B
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The lost update problem is when User A reads data that have been processed by a portion of a transaction from User B.
Answer: B
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The advantage of optimistic locking is that:
Answer: A
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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?
Answer: B
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