Quick Answer
The answer is a one-to-many relationship from dimension to fact. This is correct because in a star schema, dimension tables contain unique values for each attribute (the "one" side), while fact tables store multiple transactional records that reference those attributes (the "many" side). When you set the relationship direction from dimension to fact, filters applied to a dimension table automatically propagate down to the fact table, ensuring accurate and unambiguous filtering. On the Microsoft Power BI Data Analyst PL-300 exam, this concept tests your understanding of dimensional modeling fundamentals and is often presented as a scenario where you must choose the correct cardinality and cross-filter direction. A common trap is selecting many-to-many, which can create ambiguous filtering and unexpected results, or reversing the direction to many-to-one from fact to dimension, which breaks the natural filter flow. Memory tip: think "Dimension is the boss, fact is the employee"—the boss (dimension) tells the employee (fact) what to show.
This PL-300 practice question tests your understanding of visualize and analyze the data. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
You have a Power BI dataset with a fact table and multiple dimension tables. You need to ensure that when a user filters by a dimension, the filter propagates correctly to the fact table. What type of relationship should you use?
Many-to-one from fact to dimension.
Why wrong: This direction is opposite of the typical star schema.
One-to-many from dimension to fact.
This is the standard star schema relationship.
One-to-one between dimension and fact.
Why wrong: One-to-one is not typical for dimension to fact.
Many-to-many between dimension and fact.
Why wrong: Many-to-many can lead to ambiguous filter propagation.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
One-to-many from dimension to fact.
Option A is correct because a one-to-many relationship from dimension to fact is standard for star schemas. Option B is wrong because many-to-many can cause ambiguous filtering. Option C is wrong because one-to-one is rare and not typical. Option D is wrong because many-to-one from fact to dimension is not correct direction.
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.
Many-to-one from fact to dimension.
Why it's wrong here
This direction is opposite of the typical star schema.
One-to-many from dimension to fact.
Why this is correct
This is the standard star schema relationship.
Related concept
Read the scenario before looking for a memorised answer.
One-to-one between dimension and fact.
Why it's wrong here
One-to-one is not typical for dimension to fact.
Many-to-many between dimension and fact.
Why it's wrong here
Many-to-many can lead to ambiguous filter propagation.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Identify which PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Visualize and analyze the data — This question tests Visualize and analyze the data — Read the scenario before looking for a memorised answer..
The correct answer is: One-to-many from dimension to fact. — Option A is correct because a one-to-many relationship from dimension to fact is standard for star schemas. Option B is wrong because many-to-many can cause ambiguous filtering. Option C is wrong because one-to-one is rare and not typical. Option D is wrong because many-to-one from fact to dimension is not correct direction.
Identify which PL-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
This PL-300 practice question is part of Courseiva's free Microsoft 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 PL-300 exam.
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