The answer is a) It improves upon the two-phased commit by requiring that locks be acquired at the start of a transaction.
Reason: The 3PC is an extension or you can say developed from 2PC that avoids blocking of an operation. It just ensures that first n sites have intended to commit a transaction that means it acquires commits or locks before the start of any transaction to avoid any blocking.
Option b) is wrong as it does not allow coordination, it just let all the other sites do their transaction if any other site is blocked, so no coordination is there between sites that they will wait till their coordinator is corrected.
Option c) is wrong as lock operations are shared between other connections as when their coordinator fails, the new coordinator agrees to the old coordinator that they had shared locks before and they can start their transaction.
Option d) is wrong as option a) is correct.
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This is true because some people may be going through rough times and when they aren't they probably won't feel the same way as they do when they go through tough times.
IPR offers ownership of the intellectual property. The owner of the property has the right to a monetary gain from those who wish to use it.
Answer:
Advantages: computers don't make human error
It can be used for communication
Ease of access
Disadvantages: computers can be a distraction
Potential loss of privacy
It can limit learning and create a dependency
Answer:
autocratic
Explanation:
taking no account of other peoples wishes or opinions; domineering
