This validation scheme is called the _________- scheme since transactions execute optimistically, assuming they will be able to finish execution and validate at the end.
A. Validation protocol
B. Validation-based protocol
C. Timestamp protocol
D. Optimistic concurrency-control
Answer:A
This validation scheme is called the _________- scheme since transactions execute optimistically, assuming they will be able to finish execution and validate at the end.
A. Validation protocol B. Validation-based protocol C. Timestamp protocol D. Optimistic concurrency-control
Explanation: A concurrency-control scheme imposes overhead of code execution and possible delay of transactions. It may be better to use an alternative scheme that imposes less overhead.