UGC-NET | UGC NET CS 2014 Dec – III | Question 9

__________ rules used to limit the volume of log information that has to be handled and processed in the event of system failure involving the loss of volatile information.

(A)

Write-ahead log

(B)

Check-pointing

(C)

Log buffer

(D)

Thomas

Answer: (B)

Explanation:

• Check-pointing rules used to limit the volume of log information that has to be handled and processed in the event of system failure involving the loss of volatile information.
• Write-ahead log provide atomicity and durability in transaction.
• Log buffer is a small contiguous memory which holds memory transaction logs per database.
• Thomas write rule is a timestamp based concurrency control protocol.

For more information on Thomas write rule Refer: DBMS | Concurrency Control Protocol | Thomas Write Rule

Option (B) is correct.

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