A taxonomy of concurrency control algorithms can classify algorithms as pessimistic or optimistic. Compare and contrast these algorithms.
What will be an ideal response?
Optimistic: assume not too many transactions will conflict with one another. Delay
synchronization of transactions until their termination.
Pessimistic: assume many transactions will conflict with each other. Synchronization execution of
transactions early in their lifecycle.
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```A ________ is an organization of fields that start with the most general and go down to the most specific.?
A. ?Hierarchy B. ?Trendline C. ?Data Cube D. ?Timeline slicer
Choose the correctly capitalized sentence.?
A. ?Keith is an assistant in Senator Johnson's office. B. ?Keith is an assistant in senator Johnson's office.
Describe the difference between a serif and sans serif font. Give examples of when you might use each.
What will be an ideal response?