Discussion
Which of the following is not one of the stages in the evolution of distributed DBMS?
Answer: A
Correct answer: Unit of work
The recognised stages are remote unit of work, distributed unit of work and distributed request, in order of increasing capability - from a transaction touching one remote site, to one touching several, to a single statement spanning several. A plain unit of work is the centralised case and is not a stage in the evolution at all.
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