[Solved] A developer writes a DynamoDB query but gets a validation error. Which mistake likely caused it? — Ans: Using a reserved word as an attribute name without aliasing | AWS

AWS - DynamoDB

A developer writes a DynamoDB query but gets a validation error. Which mistake likely caused it?

ASpecifying both partition and sort keys correctly

BUsing a reserved word as an attribute name without aliasing

CUsing a valid JSON format for the query

DProviding a valid table name

Step-by-Step Solution

Solution:

Step 1: Identify common causes of validation errors
Using reserved words as attribute names without aliasing causes validation errors in DynamoDB queries.
Step 2: Check other options for correctness
Options A, C, and D describe correct practices and would not cause validation errors.
Final Answer:
Using a reserved word as an attribute name without aliasing -> Option B
Quick Check:
Validation error cause = B [OK]

Quick Trick: Avoid reserved words or use aliases in attribute names [OK]

Common Mistakes:

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