DA0-002 Data Concepts and Environments Practice Question
A company is designing a database for an e-commerce application that requires high transaction throughput and must guarantee that each transaction is processed atomically. Which property of ACID ensures that a transaction is either fully completed or not executed at all?
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
✓
Atomicity
Atomicity guarantees that a transaction is treated as a single unit; it either completes entirely or is rolled back, preventing partial updates.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Atomicity
Why this is correct
Atomicity ensures the transaction is all-or-nothing.
- ✗
Isolation
Why it's wrong here
Isolation ensures concurrent transactions do not interfere with each other.
- ✗
Durability
Why it's wrong here
Durability ensures that committed transactions persist even after a system failure.
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Consistency
Why it's wrong here
Consistency ensures that a transaction brings the database from one valid state to another.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA 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 DA0-002 exam.