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An update log record describes a ________ database write(a) Single(b) Double(c) Triple(d) QuadrupleI got this question during an interview.The origin of the question is Recovery and Atomicity in section Recovery System of RDBMS

Answer» RIGHT answer is (a) SINGLE

Best explanation: An update log record describes a single database WRITE. It has four fields in it which are, transaction identifier, data-item identifier, old VALUE, NEW value.


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