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01
/ 10
Which of the following statements about concurrency control is true?
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A.
Concurrency control uses locking and versioning techniques to ensure data consistency.
B.
Concurrency checking is done only by database administrators and does not limit users' access.
C.
Concurrency control uses only data backup methods to improve database performance.
D.
Concurrency control only checks data read operations, not write operations.
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