- A
Amazon Aurora
Aurora offers ACID transactions, complex joins, and cross-region read replicas.
- B
Amazon DynamoDB
Why wrong: DynamoDB transactions are limited and do not support complex joins.
- C
Amazon RDS for SQL Server
Why wrong: RDS SQL Server supports ACID but cross-region replicas are not as fully featured as Aurora.
- D
Amazon Redshift
Why wrong: Redshift is for analytics, not transactional workloads.
Question 1,390 of 1,730
Amazon Aurora for ACID Transactions — Complex Joins and Cross-Region Read Replicas
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 is designing a database for an e-commerce platform that requires ACID transactions for order processing, complex joins for inventory reporting, and the ability to scale read replicas across multiple AWS regions. Which database service best meets these requirements?
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
✓
Amazon Aurora
Amazon Aurora is the correct choice because it provides full ACID compliance for transactional workloads, supports complex joins via its MySQL/PostgreSQL-compatible relational engine, and offers up to 15 low-latency read replicas that can be placed in multiple AWS Regions using Aurora Global Database. This combination of strong consistency, relational query capabilities, and cross-region read scaling directly matches the e-commerce platform's requirements.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Amazon Aurora
Why this is correct
Aurora offers ACID transactions, complex joins, and cross-region read replicas.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon DynamoDB
Why it's wrong here
DynamoDB transactions are limited and do not support complex joins.
- ✗
Amazon RDS for SQL Server
Why it's wrong here
RDS SQL Server supports ACID but cross-region replicas are not as fully featured as Aurora.
- ✗
Amazon Redshift
Why it's wrong here
Redshift is for analytics, not transactional workloads.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose DynamoDB for its scalability but overlook the explicit requirement for complex joins, which DynamoDB cannot perform natively, or they choose RDS for SQL Server without realizing its strict limit on read replicas and lack of native cross-region replication.
Detailed technical explanation
How to think about this question
Aurora Global Database uses a primary cluster in one region and up to five secondary regions, each with up to 16 read replicas, replicating data with a typical latency of under one second using dedicated storage-level replication. Under the hood, Aurora separates storage from compute, allowing read replicas to access the same distributed storage volume with minimal overhead, and uses a quorum-based write model to ensure ACID compliance even across Availability Zones.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
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
Related DBS-C01 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Workload-Specific Database Design practice questions
Practise DBS-C01 questions linked to Workload-Specific Database Design.
Deployment and Migration practice questions
Practise DBS-C01 questions linked to Deployment and Migration.
Management and Operations practice questions
Practise DBS-C01 questions linked to Management and Operations.
Monitoring and Troubleshooting practice questions
Practise DBS-C01 questions linked to Monitoring and Troubleshooting.
Database Security practice questions
Practise DBS-C01 questions linked to Database Security.
DBS-C01 fundamentals practice questions
Practise DBS-C01 questions linked to DBS-C01 fundamentals.
DBS-C01 scenario practice questions
Practise DBS-C01 questions linked to DBS-C01 scenario.
DBS-C01 troubleshooting practice questions
Practise DBS-C01 questions linked to DBS-C01 troubleshooting.
Practice this exam
Start a free DBS-C01 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this DBS-C01 question test?
Workload-Specific Database Design — This question tests Workload-Specific Database Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon Aurora — Amazon Aurora is the correct choice because it provides full ACID compliance for transactional workloads, supports complex joins via its MySQL/PostgreSQL-compatible relational engine, and offers up to 15 low-latency read replicas that can be placed in multiple AWS Regions using Aurora Global Database. This combination of strong consistency, relational query capabilities, and cross-region read scaling directly matches the e-commerce platform's requirements.
What should I do if I get this DBS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
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 →
Same concept, more angles
1 more ways this is tested on DBS-C01
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company runs a financial application that requires ACID transactions on a relational database. The workload has a high volume of writes and reads, and the team wants to minimize operational overhead. Which AWS database service should they choose?
medium- A.Amazon RDS for Oracle
- B.Amazon DynamoDB with transactions enabled
- C.Amazon ElastiCache for Memcached
- ✓ D.Amazon Aurora (MySQL-compatible)
Why D: Amazon Aurora (MySQL-compatible) is the correct choice because it provides full ACID transaction support required for a financial application, while delivering high throughput for both reads and writes through its distributed, SSD-backed storage architecture. Aurora also minimizes operational overhead by automating tasks like replication, backups, and failover, and it offers up to 5x the throughput of standard MySQL without requiring manual sharding or tuning.
Keep practising
More DBS-C01 practice questions
- A company is deploying a new application on Amazon RDS for PostgreSQL. The security policy requires that all data be enc…
- Match each AWS service to its primary purpose.
- A financial services company runs a production Amazon Aurora MySQL database cluster (1 writer, 2 readers) in us-east-1.…
- A company is designing a database for a global e-commerce platform that requires low-latency reads and writes from multi…
- A security auditor reviews the output of a DynamoDB table description command as shown in the exhibit. Which statement a…
- A company is migrating an on-premises Oracle database to Amazon RDS for Oracle. The database contains sensitive data tha…
Last reviewed: Jul 4, 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.