- A
Enable eventual consistency for read replicas to reduce latency
Why wrong: Aurora provides strong consistency; eventual consistency is not an option.
- B
Review and adapt application SQL queries for MySQL compatibility
Oracle and MySQL differ in SQL syntax.
- C
Evaluate the impact of Aurora's storage engine on query performance
Aurora's storage engine differs from Oracle's.
- D
Use Aurora Multi-Master to distribute write load
Why wrong: Multi-Master is an option but not a critical migration consideration.
- E
Compress all tables to reduce storage costs
Why wrong: Compression is not automatically available; needs evaluation.
Question 1,270 of 1,730
DBS-C01 Workload-Specific Database Design Practice Question
This DBS-C01 practice question tests your understanding of workload-specific database design. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which TWO database design considerations are critical when migrating a high-traffic e-commerce website from Oracle to Amazon Aurora MySQL? (Choose 2.)
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
✓
Review and adapt application SQL queries for MySQL compatibility
Option B is correct because Oracle and MySQL use different SQL dialects, data types, and functions. Migrating a high-traffic e-commerce application requires reviewing and adapting all SQL queries to ensure compatibility with Aurora MySQL, including handling Oracle-specific features like sequences, hierarchical queries (CONNECT BY), and PL/SQL stored procedures. Failure to do so will cause runtime errors or degraded performance.
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.
- ✗
Enable eventual consistency for read replicas to reduce latency
Why it's wrong here
Aurora provides strong consistency; eventual consistency is not an option.
- ✓
Review and adapt application SQL queries for MySQL compatibility
Why this is correct
Oracle and MySQL differ in SQL syntax.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Evaluate the impact of Aurora's storage engine on query performance
Why this is correct
Aurora's storage engine differs from Oracle's.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use Aurora Multi-Master to distribute write load
Why it's wrong here
Multi-Master is an option but not a critical migration consideration.
- ✗
Compress all tables to reduce storage costs
Why it's wrong here
Compression is not automatically available; needs evaluation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume Aurora Multi-Master is the best choice for high write loads, but the exam tests understanding that Multi-Master introduces conflict resolution overhead and is typically not recommended for standard e-commerce workloads, where a single writer with read replicas is more appropriate.
Detailed technical explanation
How to think about this question
Aurora MySQL's storage engine decouples compute from storage, using a 6-replica quorum-based system across three Availability Zones. This architecture means that query performance is heavily influenced by the storage engine's page cache and the redo log processing, which differs from Oracle's undo/redo model. For example, migrating Oracle's ROWNUM or NVL functions requires rewriting to LIMIT and IFNULL, and understanding Aurora's buffer pool and write-ahead log (WAL) behavior is critical for tuning high-traffic workloads.
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
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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.
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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: Review and adapt application SQL queries for MySQL compatibility — Option B is correct because Oracle and MySQL use different SQL dialects, data types, and functions. Migrating a high-traffic e-commerce application requires reviewing and adapting all SQL queries to ensure compatibility with Aurora MySQL, including handling Oracle-specific features like sequences, hierarchical queries (CONNECT BY), and PL/SQL stored procedures. Failure to do so will cause runtime errors or degraded performance.
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.
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Last reviewed: Jul 4, 2026
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