Quick Answer
The answer is to create a bridge table with a calculated column to establish a one-to-many relationship. This resolves the many-to-many relationship in a composite model by introducing a separate table that contains only the unique key values from both sides, effectively breaking the ambiguity into a star-like schema. In a composite model where an imported dimension table connects to a DirectQuery fact table, a many-to-many relationship causes ambiguous filtering because the engine cannot determine which side to filter first; the bridge table acts as an intermediary, ensuring filters propagate correctly without cross-filtering direction issues. On the PL-300 exam, this scenario tests your understanding of composite model design and the limitations of DirectQuery when mixing storage modes—a common trap is trying to use a bi-directional filter or changing cross-filter direction, which won’t fix the structural ambiguity. Remember the memory tip: “Bridge the gap, don’t cross the streams”—a bridge table creates clear one-to-many paths, while bi-directional filters only work in single-source models.
This PL-300 practice question tests your understanding of prepare 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 are a Power BI administrator at Contoso Ltd. The company has a Power BI tenant with Premium capacity. A data analyst has published a dataset that uses DirectQuery mode to a SQL Server database. Users report that the report is slow. You need to improve query performance without changing the data source. You decide to implement a composite model by adding an imported table for a frequently used dimension. After importing, you notice that the relationship between the imported table and the DirectQuery table is Many-to-Many, which causes ambiguity. What should you do to resolve the ambiguity and ensure correct filtering?
Remove the imported table and use only DirectQuery.
Why wrong: Performance improvement is lost.
Create a bridge table with a calculated column to create a one-to-many relationship.
This resolves the many-to-many by providing a unique key.
Use the CROSSFILTER function to ignore the relationship.
Why wrong: Does not resolve ambiguity.
Change the relationship to One-to-Many (1:*).
Why wrong: The data does not support this cardinality.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Create a bridge table with a calculated column to create a one-to-many relationship.
Option B is correct because a bridge table resolves the Many-to-Many ambiguity by creating a separate table that contains only the unique key values from both sides, enabling a star-like schema with one-to-many relationships. This ensures that filters from the imported dimension table propagate correctly to the DirectQuery fact table without ambiguity.
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.
Remove the imported table and use only DirectQuery.
Why it's wrong here
Performance improvement is lost.
Create a bridge table with a calculated column to create a one-to-many relationship.
Why this is correct
This resolves the many-to-many by providing a unique key.
Related concept
Read the scenario before looking for a memorised answer.
Use the CROSSFILTER function to ignore the relationship.
Why it's wrong here
Does not resolve ambiguity.
Change the relationship to One-to-Many (1:*).
Why it's wrong here
The data does not support this cardinality.
Common exam traps
The trap here is that candidates mistakenly think changing the relationship cardinality or using CROSSFILTER can fix Many-to-Many ambiguity, but only a bridge table or a calculated table with unique keys can properly resolve it in a composite model.
Detailed technical explanation
In Power BI, a bridge table typically contains distinct values from the common column (e.g., a key) and is related to both the imported dimension and the DirectQuery fact table via one-to-many relationships. This pattern leverages the storage engine for the imported table while keeping the DirectQuery table in SQL Server, and the bridge ensures that filter context flows correctly without cross-filtering ambiguity. Under the hood, Power BI uses the bridge to resolve the Many-to-Many by treating it as a classic star schema with an intermediate table.
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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Prepare the data — study guide chapter
Learn the concepts, then practise the questions
Prepare the data practice questions
Targeted practice on this topic area only
All PL-300 questions
966 questions across all exam domains
Microsoft Power BI Data Analyst PL-300 study guide
Full concept coverage aligned to exam objectives
PL-300 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise PL-300 questions linked to Prepare the data.
Practise PL-300 questions linked to Deploy and maintain assets.
Practise PL-300 questions linked to Model the data.
Practise PL-300 questions linked to Visualize and analyze the data.
Practise PL-300 questions linked to Manage and secure Power BI.
Practise PL-300 questions linked to PL-300 fundamentals.
Practise PL-300 questions linked to PL-300 scenario.
Practise PL-300 questions linked to PL-300 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Prepare the data — This question tests Prepare the data — Read the scenario before looking for a memorised answer..
The correct answer is: Create a bridge table with a calculated column to create a one-to-many relationship. — Option B is correct because a bridge table resolves the Many-to-Many ambiguity by creating a separate table that contains only the unique key values from both sides, enabling a star-like schema with one-to-many relationships. This ensures that filters from the imported dimension table propagate correctly to the DirectQuery fact table without ambiguity.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 24, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.