- A
Amazon QuickSight
Why wrong: Visualization tool, not for querying.
- B
AWS Glue ETL jobs
Why wrong: For ETL, not ad-hoc queries.
- C
Amazon Redshift Spectrum
Why wrong: Requires a Redshift cluster.
- D
Amazon Athena
Serverless, queries S3 directly with SQL.
Question 1,571 of 1,730
Amazon Athena for S3 Querying
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.
A company needs to run complex analytical queries on structured data in Amazon S3 without loading data into a database. The queries must execute quickly and support standard SQL. Which service should they use?
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 Athena
Amazon Athena is a serverless interactive query service that allows you to run standard SQL directly on data stored in Amazon S3 without loading or transforming it. It uses Presto under the hood and supports complex analytical queries on structured data with fast execution, making it the ideal choice for this use case.
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 QuickSight
Why it's wrong here
Visualization tool, not for querying.
- ✗
AWS Glue ETL jobs
Why it's wrong here
For ETL, not ad-hoc queries.
- ✗
Amazon Redshift Spectrum
Why it's wrong here
Requires a Redshift cluster.
- ✓
Amazon Athena
Why this is correct
Serverless, queries S3 directly with SQL.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Amazon Redshift Spectrum with Athena, but Spectrum requires an existing Redshift cluster (provisioned infrastructure), whereas Athena is truly serverless and directly queries S3 without any database setup.
Detailed technical explanation
How to think about this question
Athena leverages the Presto distributed SQL query engine, which uses a connector architecture to read data directly from S3 via the S3 Select and GetObject APIs, pushing down predicate filtering and column pruning to minimize data scanned. It supports complex joins, window functions, and CTEs, and integrates with AWS Glue Data Catalog for schema management, enabling schema-on-read flexibility for structured data like Parquet, ORC, or JSON.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
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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: Amazon Athena — Amazon Athena is a serverless interactive query service that allows you to run standard SQL directly on data stored in Amazon S3 without loading or transforming it. It uses Presto under the hood and supports complex analytical queries on structured data with fast execution, making it the ideal choice for this use case.
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
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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