This DBS-C01 practice question tests your understanding of workload-specific database design. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company needs to store JSON documents that are frequently accessed by a web application. The documents have varying attributes and the query pattern includes filtering on multiple fields. Which AWS database service is most suitable?
Amazon Neptune
Why wrong: Graph database, not optimized for JSON document queries.
Amazon ElastiCache for Redis
Why wrong: Designed as cache, not durable primary store.
Amazon DynamoDB
NoSQL, supports JSON and flexible queries with GSIs.
Amazon RDS for MySQL
Why wrong: Relational schema is rigid for varying JSON attributes.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon DynamoDB
Amazon DynamoDB is the most suitable choice because it is a fully managed NoSQL key-value and document database that natively supports JSON documents with varying attributes. Its flexible schema allows each item to have different attributes, and its support for secondary indexes (Local Secondary Indexes and Global Secondary Indexes) enables efficient filtering and querying on multiple fields without requiring predefined schemas or complex joins.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon Neptune
Why it's wrong here
Graph database, not optimized for JSON document queries.
Amazon ElastiCache for Redis
Why it's wrong here
Designed as cache, not durable primary store.
Amazon DynamoDB
Why this is correct
NoSQL, supports JSON and flexible queries with GSIs.
Related concept
Read the scenario before looking for a memorised answer.
Amazon RDS for MySQL
Why it's wrong here
Relational schema is rigid for varying JSON attributes.
Common exam traps
The trap here is that candidates often choose Amazon RDS for MySQL because they assume JSON support in relational databases is sufficient, but they overlook the performance and schema flexibility limitations when dealing with varying attributes and multi-field filtering at scale.
Detailed technical explanation
DynamoDB stores JSON documents as items in tables, where each item is a collection of attributes that can differ per item. For multi-field filtering, you can create Global Secondary Indexes (GSIs) on specific attributes, allowing efficient queries using equality or range conditions on up to 5 GSIs per table. Under the hood, DynamoDB uses a distributed hash table for primary key lookups and sorted range keys for GSIs, ensuring consistent single-digit millisecond latency at any scale, which is critical for web applications with unpredictable access patterns.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Workload-Specific Database Design — study guide chapter
Learn the concepts, then practise the questions
Workload-Specific Database Design practice questions
Targeted practice on this topic area only
All DBS-C01 questions
1,730 questions across all exam domains
AWS Certified Database Specialty DBS-C01 study guide
Full concept coverage aligned to exam objectives
DBS-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise DBS-C01 questions linked to Workload-Specific Database Design.
Practise DBS-C01 questions linked to Deployment and Migration.
Practise DBS-C01 questions linked to Management and Operations.
Practise DBS-C01 questions linked to Monitoring and Troubleshooting.
Practise DBS-C01 questions linked to Database Security.
Practise DBS-C01 questions linked to DBS-C01 fundamentals.
Practise DBS-C01 questions linked to DBS-C01 scenario.
Practise DBS-C01 questions linked to DBS-C01 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Workload-Specific Database Design — This question tests Workload-Specific Database Design — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon DynamoDB — Amazon DynamoDB is the most suitable choice because it is a fully managed NoSQL key-value and document database that natively supports JSON documents with varying attributes. Its flexible schema allows each item to have different attributes, and its support for secondary indexes (Local Secondary Indexes and Global Secondary Indexes) enables efficient filtering and querying on multiple fields without requiring predefined schemas or complex joins.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
Last reviewed: Jun 24, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.