Question 76 of 1,663
DBS-C01 Workload-Specific Database Design Practice Question
A company is running a MySQL database on Amazon RDS and needs to store JSON documents that are frequently queried by fields within the JSON. The company wants to reduce development complexity and improve query performance. Which RDS MySQL feature should the database specialist recommend?
⚠ Common exam trap
Watch out — candidates often assume DynamoDB (Option A) is the only way to handle JSON efficiently, overlooking MySQL 8.0's native JSON support which avoids cross-service complexity while providing comparable query capabilities.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the JSON data type in MySQL 8.0 and utilize JSON path expressions in queries
MySQL 8.0's native JSON data type stores JSON documents in an optimized binary format, enabling efficient indexing and querying via JSON path expressions (e.g., `JSON_EXTRACT`, `->`, `->>`). This reduces development complexity by allowing direct SQL access to JSON fields without application-level parsing, and improves query performance through generated columns and virtual indexes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Migrate the JSON data to Amazon DynamoDB and use DynamoDB's document model
Why it's wrong here
Migrating to DynamoDB would require application changes and may not be necessary if the data can be handled within RDS.
- ✓
Use the JSON data type in MySQL 8.0 and utilize JSON path expressions in queries
Why this is correct
MySQL's JSON data type allows efficient storage and querying using JSON path expressions and indexes.
- ✗
Store JSON documents in a VARCHAR(MAX) column and use LIKE operations for queries
Why it's wrong here
LIKE operations on VARCHAR columns are inefficient and do not support JSON path queries.
- ✗
Store JSON documents as BLOBs and parse them in application code
Why it's wrong here
This approach puts parsing burden on the application and prevents database-level optimization.
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Last reviewed: Jun 11, 2026
This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.
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