a) cookies
b) browser
c) only in Internet Explorer
d) only in Chrome
Answer: a
Explanation: When HTML5 was not introduced application data had to store in cookies when server requested for it. Web storage was secure then as well as large data could be stored even it does not affect performance. After coming of HTML5 web applications can store data within the browser that the user is using.
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Consider a transaction T1 that committed prior to checkpoint. The <T1 commits> record appears in the log before the <checkpoint> record. Any modifications made by T1 must have been written to the stable storage either with the checkpoint or prior to it. Thus at recovery time ____________
The system periodically performs checkpoints that consists of the following operation(s) ____________
The undo and redo operations must be _________ to guarantee correct behaviour, even if a failure occurs during recovery process.
An actual update is not allowed to a data item ____________
In the write ahead logging a _____________ is maintained.
Write ahead logging is a way ____________
The state of the data accessed by an aborted transaction must be restored to what it was just before the transaction started executing. This restoration is known as ________ of transaction.
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