a) its structure and style are such that any changes to the requirements can be made easily while retaining the style and structure
b) every requirement stated therein is one that the software shall meet
c) every requirement stated therein is verifiable
d) no subset of individual requirements described in it conflict with each other
Answer: d
Explanation: Real world object may conflict with each other for example one requirement says that all lights should be red while the other states that all lights should green.
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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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