Q. The advantage of optimistic locking is that:

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Q. 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?

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Q. Which of the following refers to a cursor type where changes of any type and from any source are visible?

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Q. Which of the following disallows both dirty reads and nonrepeatable reads, but allows phantom reads?

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Q. Dirty read, nonrepeatable, and phantom reads are not possible in this instance.

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Q. A transaction in which either all of the database actions occur or none of them do is called:

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Q. A cursor type in which the application can only move forward through the recordset is called:

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Q. Which of the following occurs when one transaction reads a changed record that has not been committed to the database?

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Q. Which of the following allows dirty reads, nonrepeatable reads and phantom reads to occur?

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Q. Which of the following locks the item from access of any type?

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Q. The size of a lock is called:

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Q. A cursor type in which the application sees the data as they were at the time the cursor was opened is called:

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Q.
Locks placed by the DBMS are called ________ .

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Q. If an transaction is performed in a database and committed, the changes are taken to the previous state of transaction by

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Q. When the transaction finishes the final statement the transaction enters into

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Q. Which of the following is an atomic sequence of database actions?

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Q. DBMS periodically suspends all processing and synchronizes its files and journals through the use of

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Q. A race condition occurs when

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Q. Data integrity control

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Q. The type of constraints that specifies the uniqueness of data stored in the database are considered as

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