The answer is that multiple inactive relationships between the same tables cause ambiguity, so USERELATIONSHIP may not activate the intended path. This is because the DAX function can only resolve one inactive relationship at a time, and when more than one exists between Sales and Date, the engine cannot determine which to use, leading to incorrect results. On the Microsoft Power BI Data Analyst PL-300 exam, this tests your understanding of relationship management and the limitations of USERELATIONSHIP, often appearing as a trap where candidates assume syntax or filter logic is the problem. A common memory tip is to think of USERELATIONSHIP as a one-way switch—if you have multiple switches between the same two rooms, flipping one may not guarantee the correct light turns on. Always verify that only one inactive relationship exists between the tables involved, or use a bridge table to avoid the ambiguity.
PL-300 Visualize and analyze the data Practice Question
This PL-300 practice question tests your understanding of visualize and analyze the data. 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.
Exhibit
Refer to the exhibit.
```dax
CALCULATE(
SUM(Sales[Amount]),
Sales[Region] = "West",
USERELATIONSHIP(Sales[DateKey], 'Date'[DateKey])
)
```
You have the DAX expression shown. It is intended to sum sales for the West region using an inactive relationship. However, the result is incorrect. What is the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
There may be multiple inactive relationships between Sales and Date, causing ambiguity.
Option B is correct because USERELATIONSHIP activates a relationship, but if there are multiple inactive relationships between the same tables, it might not pick the intended one. Option A is wrong because the syntax is correct. Option C is wrong because the filter is applied correctly. Option D is wrong because there is no ambiguity in the filter.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The USERELATIONSHIP function syntax is incorrect.
Why it's wrong here
Syntax is valid.
✓
There may be multiple inactive relationships between Sales and Date, causing ambiguity.
Why this is correct
USERELATIONSHIP needs a single, clear path.
Related concept
Read the scenario before looking for a memorised answer.
✗
The filter on Region should be in a separate CALCULATE.
Why it's wrong here
Multiple filters in CALCULATE are fine.
✗
The column names are case-sensitive and don't match.
Why it's wrong here
Case sensitivity is not an issue.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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
Got this wrong? Here's your next step.
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.
Visualize and analyze the data — This question tests Visualize and analyze the data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: There may be multiple inactive relationships between Sales and Date, causing ambiguity. — Option B is correct because USERELATIONSHIP activates a relationship, but if there are multiple inactive relationships between the same tables, it might not pick the intended one. Option A is wrong because the syntax is correct. Option C is wrong because the filter is applied correctly. Option D is wrong because there is no ambiguity in the filter.
What should I do if I get this PL-300 question wrong?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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