Does DynamoDB support in-place atomic updates?

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Does DynamoDB support in-place atomic updates?
A .  Yes
B .  No
C .  It does support in-place non-atomic updates
D .  It is not defined

Answer: A

Explanation:

DynamoDB supports in-place atomic updates.

Reference:

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithItems.html#WorkingWithItems.AtomicCounters

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