Dynamo is a NoSQL database developed by Amazon. Which of the following about Dynamo is/are correct?Question 14Select one or more:Select one or more:a.Dynamo provides security related support for managing data, such as authentication and authorization.b.Dynamo is designed to achieve strong consistency and high data availability simultaneously.c.Dynamo uses the technique of consistent hashing to map each node to a single datacenter.d.Dynamo is targeted mainly at applications where no updates are rejected due to concurrent writes.
Question
Dynamo is a NoSQL database developed by Amazon. Which of the following about Dynamo is/are correct?Question 14Select one or more:Select one or more:a.Dynamo provides security related support for managing data, such as authentication and authorization.b.Dynamo is designed to achieve strong consistency and high data availability simultaneously.c.Dynamo uses the technique of consistent hashing to map each node to a single datacenter.d.Dynamo is targeted mainly at applications where no updates are rejected due to concurrent writes.
Solution
The correct answers are:
a. Dynamo provides security related support for managing data, such as authentication and authorization. This is true as Amazon DynamoDB provides mechanisms for managing user authentication and data authorization.
d. Dynamo is targeted mainly at applications where no updates are rejected due to concurrent writes. This is also true as DynamoDB uses a technique called 'optimistic locking' to handle concurrent writes, which allows it to
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