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What is the main purpose of DynamoDB Streams?

easy📝 Conceptual Q11 of 15
AWS - DynamoDB
What is the main purpose of DynamoDB Streams?
ATo store backups of DynamoDB tables permanently
BTo encrypt data stored in DynamoDB tables
CTo increase the read capacity of a DynamoDB table
DTo track and react to data changes in real time
Step-by-Step Solution
Solution:

  1. Step 1: Understand DynamoDB Streams function

    DynamoDB Streams capture data changes like inserts, updates, and deletes in real time.

  2. Step 2: Compare options with Streams purpose

    Only To track and react to data changes in real time correctly describes tracking and reacting to data changes. Other options describe unrelated features.

  3. Final Answer:

    To track and react to data changes in real time -> Option D

  4. Quick Check:

    DynamoDB Streams = Track data changes [OK]
Quick Trick: Streams capture table changes instantly for reaction [OK]
Common Mistakes:
  • Confusing Streams with backup or encryption features
  • Thinking Streams increase read capacity
  • Assuming Streams store data permanently

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