Quick Answer
The answer is ON DELETE CASCADE, which is the correct referential action because it automatically deletes all child rows in the Enrollments table whenever the corresponding parent row in the Students table is removed, thereby enforcing the university policy of maintaining data consistency without manual intervention. This rule is part of foreign key constraint options that preserve referential integrity by ensuring no orphaned enrollment records remain after a student withdrawal. On the CompTIA ITF+ FC0-U61 exam, this concept tests your understanding of how database relationships handle cascading changes, often appearing in scenario-based questions where you must choose the action that best matches a business rule. A common trap is confusing CASCADE with SET NULL or RESTRICT—remember that CASCADE removes dependent data entirely, while SET NULL only blanks the foreign key. For a quick memory tip, think of a domino effect: when the parent falls (is deleted), the children fall (are deleted) right along with it.
This FC0-U61 practice question tests your understanding of database fundamentals. 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 university database includes a table named 'Students' and a table named 'Enrollments'. The 'Enrollments' table has a foreign key column 'StudentID' that references the 'StudentID' primary key in the 'Students' table. The university policy requires that when a student withdraws (i.e., their record is deleted from the 'Students' table), all of their associated enrollment records must be automatically removed to maintain data consistency. The database administrator wants to enforce this rule at the database level. Which referential action should be applied when creating the foreign key constraint on the 'Enrollments' table?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
ON DELETE CASCADE
CASCADE automatically deletes child records when parent is deleted.
ON DELETE SET NULL
Why wrong: SET NULL would orphan enrollment records with NULL StudentID, not delete them.
ON DELETE NO ACTION
Why wrong: NO ACTION (like RESTRICT) prevents deletion if child records exist.
ON DELETE RESTRICT
Why wrong: RESTRICT prevents deletion if child records exist, not desired.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
ON DELETE CASCADE
Option A (ON DELETE CASCADE) is correct because it automatically deletes all child rows in the 'Enrollments' table when the corresponding parent row in the 'Students' table is deleted. This enforces the university policy of removing associated enrollment records upon student withdrawal, maintaining referential integrity at the database level without manual intervention.
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.
ON DELETE CASCADE
Why this is correct
CASCADE automatically deletes child records when parent is deleted.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
ON DELETE SET NULL
Why it's wrong here
SET NULL would orphan enrollment records with NULL StudentID, not delete them.
ON DELETE NO ACTION
Why it's wrong here
NO ACTION (like RESTRICT) prevents deletion if child records exist.
ON DELETE RESTRICT
Why it's wrong here
RESTRICT prevents deletion if child records exist, not desired.
Common exam traps
The trap here is that candidates often confuse ON DELETE CASCADE with ON DELETE SET NULL or ON DELETE RESTRICT, mistakenly thinking that preventing deletion or setting NULL satisfies the automatic removal requirement, when only CASCADE actually deletes the child records automatically.
Detailed technical explanation
ON DELETE CASCADE is implemented by the database engine as a trigger-like mechanism that recursively deletes child rows when a parent row is deleted, ensuring referential integrity without application-level logic. In SQL, the syntax is 'FOREIGN KEY (StudentID) REFERENCES Students(StudentID) ON DELETE CASCADE'. A real-world scenario where this matters is in e-commerce systems where deleting a customer must also remove all associated orders to avoid orphaned records.
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
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
Database Fundamentals — This question tests Database Fundamentals — Read the scenario before looking for a memorised answer..
The correct answer is: ON DELETE CASCADE — Option A (ON DELETE CASCADE) is correct because it automatically deletes all child rows in the 'Enrollments' table when the corresponding parent row in the 'Students' table is deleted. This enforces the university policy of removing associated enrollment records upon student withdrawal, maintaining referential integrity at the database level without manual intervention.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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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