Quick Answer
The correct answer is Date and Product, as these are the two tables that are typically dimension tables in a star schema. In a star schema, dimension tables contain descriptive attributes that provide context to the numeric measures stored in fact tables, such as dates, product names, or customer details. The Date table is a classic dimension because it holds time-based attributes like year, quarter, and month, while the Product table stores descriptive fields like category and brand. On the Microsoft Power BI Data Analyst PL-300 exam, this concept tests your ability to distinguish between fact and dimension tables, a common trap being that TransactionDetails or InventoryTransactions sound like dimensions but are actually fact tables containing measurable data. A helpful memory tip is to think of dimensions as the "who, what, when, where" and facts as the "how many" or "how much"—so if a table describes a business entity like a product or a date, it is a dimension.
This PL-300 practice question tests your understanding of model 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 creating a star schema in Power BI. Which TWO tables are typically dimension tables?
TransactionDetails
Why wrong: Usually a fact table with details.
Product
Product is a dimension table.
Date
Date is a dimension table.
InventoryTransactions
Why wrong: Typically a fact table.
Sales
Why wrong: Sales is a fact table containing measures.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Product
Option B is correct: Date table is a classic dimension. Option D is correct: Product table is a dimension. Option A is wrong because Sales is a fact table. Option C is wrong because TransactionDetails is typically a fact table. Option E is wrong because InventoryTransactions is a fact table.
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.
TransactionDetails
Why it's wrong here
Usually a fact table with details.
Product
Why this is correct
Product is a dimension table.
Related concept
Read the scenario before looking for a memorised answer.
Date
Why this is correct
Date is a dimension table.
Related concept
Read the scenario before looking for a memorised answer.
InventoryTransactions
Why it's wrong here
Typically a fact table.
Sales
Why it's wrong here
Sales is a fact table containing measures.
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
Model the data — This question tests Model the data — Read the scenario before looking for a memorised answer..
The correct answer is: Product — Option B is correct: Date table is a classic dimension. Option D is correct: Product table is a dimension. Option A is wrong because Sales is a fact table. Option C is wrong because TransactionDetails is typically a fact table. Option E is wrong because InventoryTransactions is a fact table.
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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