DA0-002 Data Concepts and Environments Practice Question
An OLTP system processes thousands of transactions per second. Which property ensures that a transaction is fully completed or fully rolled back, preventing partial updates?
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, completed entirely or not at all.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Isolation
Why it's wrong here
Isolation ensures concurrent transactions do not interfere.
- ✗
Durability
Why it's wrong here
Durability ensures committed transactions persist.
- ✓
Atomicity
Why this is correct
Atomicity ensures all operations in a transaction complete or none do.
- ✗
Consistency
Why it's wrong here
Consistency ensures data integrity constraints are maintained.
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