Explanation:
DynamoDB supports nested attributes, which allows for the storage of complex data structures within a single item. This approach maintains the integrity of the data model and simplifies queries by keeping related data together.
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Your company is migrating from a Cassandra database to Amazon DynamoDB. The existing schema includes a table with user sessions, which includes session ID, user ID, start time, end time, and actions. The actions are stored as a list of JSON objects within the session record. What approach should be taken to convert this schema to DynamoDB?
A
Flatten the list of JSON objects and store it in a separate DynamoDB table.
B
Keep the list of JSON objects as is and use DynamoDB's support for nested attributes.
C
Convert the list of JSON objects into a string and store it in a single DynamoDB attribute.
D
Create a new DynamoDB table for each list of JSON objects.