This FC0-U61 practice question tests your understanding of database fundamentals. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 database administrator needs to remove all rows from the 'Log' table but keep the table structure for future use. The administrator also wants the operation to be irreversible (cannot be rolled back). Which SQL statement should be used?
DELETE FROM Log;
Why wrong: DELETE is DML and can be rolled back; it does not meet the irreversibility requirement.
ALTER TABLE Log REMOVE ROWS;
Why wrong: This is not valid SQL syntax for removing rows.
TRUNCATE TABLE Log;
TRUNCATE is DDL, removes all rows, and typically cannot be rolled back.
DROP TABLE Log;
Why wrong: DROP removes the table structure entirely, not just the data.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
TRUNCATE TABLE Log;
TRUNCATE TABLE Log; is correct because it removes all rows from the table while preserving the table structure (columns, constraints, indexes) for future use. Unlike DELETE, TRUNCATE is a DDL operation that does not generate individual row deletion logs, making it irreversible and cannot be rolled back in most database systems.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
DELETE FROM Log;
Why it's wrong here
DELETE is DML and can be rolled back; it does not meet the irreversibility requirement.
ALTER TABLE Log REMOVE ROWS;
Why it's wrong here
This is not valid SQL syntax for removing rows.
TRUNCATE TABLE Log;
Why this is correct
TRUNCATE is DDL, removes all rows, and typically cannot be rolled back.
Related concept
Read the scenario before looking for a memorised answer.
DROP TABLE Log;
Why it's wrong here
DROP removes the table structure entirely, not just the data.
Common exam traps
The trap here is that candidates often confuse TRUNCATE with DELETE, thinking both are reversible, or they mistakenly believe DROP TABLE preserves the structure, when in fact TRUNCATE is the only option that removes all rows irreversibly while keeping the table schema intact.
Detailed technical explanation
TRUNCATE works by deallocating the data pages used by the table, effectively resetting the storage allocation for the table, which is much faster than DELETE. In databases like SQL Server, TRUNCATE resets any auto-increment counters (e.g., IDENTITY columns) back to the seed value, while DELETE does not. A real-world scenario: a DBA might use TRUNCATE to quickly clear a staging table after a nightly ETL load without needing to recreate the table.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the FC0-U61 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Database Fundamentals — This question tests Database Fundamentals — Read the scenario before looking for a memorised answer..
The correct answer is: TRUNCATE TABLE Log; — TRUNCATE TABLE Log; is correct because it removes all rows from the table while preserving the table structure (columns, constraints, indexes) for future use. Unlike DELETE, TRUNCATE is a DDL operation that does not generate individual row deletion logs, making it irreversible and cannot be rolled back in most database systems.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This FC0-U61 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 FC0-U61 exam.
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