The write-ahead logging (WAL) protocol simply means that a. Writing of a data item should be done
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The write-ahead logging (WAL) protocol simply means that
a. Writing of a data item should be done ahead of any logging operation
b. The log record for an operation should be written before the actual data is written
c. All log records should be written before a new transaction begins execution
d. The log never needs to be written to disk.
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The correct answer is b The log record for an operation should be written before the actual dat...View the full answer
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Related Book For
Fundamentals Of Database Systems
ISBN: 9780133970777
7th Edition
Authors: Ramez Elmasri, Shamkant Navathe
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