Recall & Review
beginner
What is automatic expiration in DynamoDB?
Automatic expiration is a feature that lets DynamoDB delete items automatically after a specified time, helping manage data lifecycle without manual cleanup.
Click to reveal answer
beginner
How does automatic expiration help manage data lifecycle?
It removes outdated or unnecessary data automatically, keeping the database clean and saving storage and costs.
Click to reveal answer
beginner
Which attribute does DynamoDB use to track expiration time?
DynamoDB uses a special attribute called TTL (Time To Live) that stores the expiration timestamp for each item.
Click to reveal answer
intermediate
What happens to expired items in DynamoDB?
Expired items are automatically deleted by DynamoDB, usually within 48 hours after the expiration time passes.
Click to reveal answer
intermediate
Why is automatic expiration better than manual data cleanup?
It reduces human error, saves time, and ensures data is removed promptly without extra work.
Click to reveal answer
What does TTL stand for in DynamoDB?
✗ Incorrect
TTL means Time To Live, which is the expiration timestamp for items.
What happens when an item reaches its TTL in DynamoDB?
✗ Incorrect
Items are deleted automatically when their TTL expires.
Why is automatic expiration useful for managing data lifecycle?
✗ Incorrect
Automatic expiration removes outdated data without manual effort.
How soon after expiration does DynamoDB delete expired items?
✗ Incorrect
DynamoDB deletes expired items usually within 48 hours after expiration.
Which of these is NOT a benefit of automatic expiration?
✗ Incorrect
Automatic expiration deletes data; it does not prevent data loss.
Explain how automatic expiration in DynamoDB helps manage the data lifecycle.
Think about how DynamoDB knows when to delete data and why that helps.
You got /4 concepts.
Describe the benefits of using automatic expiration over manual data cleanup.
Consider what happens if you forget to clean old data manually.
You got /4 concepts.