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Workload-Specific Database Design →easyMultiple ChoiceObjective-mapped

DBS-C01 Workload-Specific Database Design Practice Question

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 gaming company wants to store player profiles and game state. The data is accessed via a REST API and must be highly available with single-digit millisecond latency. The schema is simple and may evolve over time. Which database 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 DynamoDB

Amazon DynamoDB is the correct choice because it is a fully managed NoSQL key-value and document database that delivers single-digit millisecond latency at any scale, making it ideal for high-availability gaming workloads. Its schema-less design allows the player profile and game state schema to evolve over time without downtime or complex migrations, and it integrates seamlessly with REST APIs via AWS SDKs or API Gateway.

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 DynamoDB

    Why this is correct

    DynamoDB provides low latency, high availability, and schema flexibility.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    Amazon S3

    Why it's wrong here

    S3 is object storage, not ideal for frequent small writes and sub-millisecond latency.

  • ✗

    Amazon RDS for PostgreSQL

    Why it's wrong here

    Relational overhead and scaling complexity for simple key-value data.

  • ✗

    Amazon Redshift

    Why it's wrong here

    Redshift is for OLAP, not OLTP.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often choose Amazon RDS for PostgreSQL because they assume relational databases are required for structured data, overlooking DynamoDB's schema-less design and its ability to handle evolving schemas with single-digit millisecond latency at scale.

Detailed technical explanation

How to think about this question

DynamoDB achieves single-digit millisecond latency by distributing data across multiple partitions using a consistent hashing mechanism, with data replicated across three Availability Zones for high availability. Its adaptive capacity feature automatically adjusts partition throughput to handle hot keys, which is critical for gaming workloads where a few popular players may generate disproportionate traffic. The schema-less nature means you can add new attributes to player profiles (e.g., a new inventory field) without altering existing records or performing DDL operations.

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.

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: Amazon DynamoDB — Amazon DynamoDB is the correct choice because it is a fully managed NoSQL key-value and document database that delivers single-digit millisecond latency at any scale, making it ideal for high-availability gaming workloads. Its schema-less design allows the player profile and game state schema to evolve over time without downtime or complex migrations, and it integrates seamlessly with REST APIs via AWS SDKs or API Gateway.

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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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.