[Solved] Which statement best describes a Local Secondary Index (LSI) in DynamoDB? — Ans: An index that uses the same partition key as the base table but a different... | AWS

AWS - DynamoDB

Which statement best describes a Local Secondary Index (LSI) in DynamoDB?

AAn index that uses the same partition key as the base table but a different sort key.

BAn index that uses a different partition key and sort key from the base table.

CAn index that can be added or removed after table creation.

DAn index that stores data in a separate table outside DynamoDB.

Step-by-Step Solution

Solution:

Step 1: Understand LSI key structure
LSI shares the same partition key as the base table but allows a different sort key for querying.
Step 2: Compare with other options
The option about adding/removing after creation describes GSI; different partition key also describes GSI; separate table is incorrect; the description matching same partition key but different sort key is correct.
Final Answer:
An index that uses the same partition key as the base table but a different sort key. -> Option A
Quick Check:
LSI = Same partition key, different sort key [OK]

Quick Trick: LSI shares partition key, changes sort key only [OK]

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Which statement best describes a Local Secondary Index (LSI) in DynamoDB?