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When importing a JSON file with nested objects from S3 into DynamoDB, how are the nested objects stored?

medium📝 query result Q5 of 15
DynamoDB - Backup and Recovery
When importing a JSON file with nested objects from S3 into DynamoDB, how are the nested objects stored?
AConverted into separate DynamoDB tables automatically
BFlattened into top-level attributes with dot notation keys
CAs DynamoDB Map attributes preserving the nested structure
DIgnored and only top-level attributes are imported
Step-by-Step Solution
Solution:

  1. Step 1: Understand DynamoDB data types

    DynamoDB supports Map attributes which can store nested JSON objects.

  2. Step 2: Analyze import behavior

    Nested JSON objects are preserved as Map attributes, not flattened or ignored.

  3. Final Answer:

    As DynamoDB Map attributes preserving the nested structure -> Option C

  4. Quick Check:

    Nested JSON maps to DynamoDB Map type [OK]
Quick Trick: Nested JSON imports as Map attributes in DynamoDB [OK]
Common Mistakes:
MISTAKES
  • Assuming nested objects are flattened
  • Thinking nested data creates new tables
  • Believing nested objects are ignored

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