dynamodb putitem vs updateitem
putItem --> Replace entire doc, old doc attributes are discarded.
updateItem --> update specific attributes, old non-changed attributes 
			   are retaineddynamodb putitem vs updateitem
putItem --> Replace entire doc, old doc attributes are discarded.
updateItem --> update specific attributes, old non-changed attributes 
			   are retainedCopyright © 2021 Codeinu
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