Question 700 of 966

Visualize and analyze the data →hardMultiple ChoiceObjective-mapped

Quick Answer

The answer is to add an object to the 'relationships' array within the dataset JSON. This is correct because in the Power BI dataset schema, relationships between tables are defined exclusively inside the "relationships" array, where each object specifies the source and target tables, cardinality, and cross-filter direction. The "tables" array only contains table definitions like columns and measures, not the links between them. On the PL-300 exam, this tests your ability to read and modify dataset metadata, often presented as a JSON policy snippet where you must identify the correct structural element to edit. A common trap is confusing the "tables" array with the "relationships" array, or thinking measures belong in the relationship definition. Remember the mnemonic: "Tables hold the parts, relationships hold the heart"—the connections live in their own dedicated array.

PL-300 Visualize and analyze the data Practice Question

This PL-300 practice question tests your understanding of visualize and analyze the data. 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.

Exhibit

Refer to the exhibit.

```json
{
  "version": "1.0",
  "dataset": {
    "name": "SalesDataset",
    "tables": [
      {
        "name": "Sales",
        "columns": [
          { "name": "SalesAmount", "dataType": "double" },
          { "name": "Date", "dataType": "dateTime" },
          { "name": "Region", "dataType": "string" }
        ],
        "measures": [
          {
            "name": "Total Sales",
            "expression": "SUM(Sales[SalesAmount])"
          }
        ]
      }
    ],
    "relationships": []
  }
}```

You receive the above JSON policy for a Power BI dataset. You need to add a relationship between the 'Sales' table and a 'Calendar' table in the same dataset. What must you modify in the JSON?

Question 1hardmultiple choice

Full question →

Exhibit

Refer to the exhibit.

```json
{
  "version": "1.0",
  "dataset": {
    "name": "SalesDataset",
    "tables": [
      {
        "name": "Sales",
        "columns": [
          { "name": "SalesAmount", "dataType": "double" },
          { "name": "Date", "dataType": "dateTime" },
          { "name": "Region", "dataType": "string" }
        ],
        "measures": [
          {
            "name": "Total Sales",
            "expression": "SUM(Sales[SalesAmount])"
          }
        ]
      }
    ],
    "relationships": []
  }
}```

A
Add an object to the 'relationships' array.
Relationships are defined in the 'relationships' array.
B
Add a new table to the 'tables' array.
Why wrong: Adding a table does not create a relationship.
C
Change the 'version' field to '2.0'.
Why wrong: Version does not affect relationships.
D
Add a measure that references the Calendar table.
Why wrong: Measures do not create relationships.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Add an object to the 'relationships' array.

Option B is correct because relationships are defined in the 'relationships' array within the dataset. Option A is wrong because the 'tables' array holds table definitions, not relationships. Option C is wrong because measures are separate. Option D is wrong because the dataset version is metadata, not a place for relationships.

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.

✓
Add an object to the 'relationships' array.
Why this is correct
Relationships are defined in the 'relationships' array.
Related concept
Read the scenario before looking for a memorised answer.
✗
Add a new table to the 'tables' array.
Why it's wrong here
Adding a table does not create a relationship.
✗
Change the 'version' field to '2.0'.
Why it's wrong here
Version does not affect relationships.
✗
Add a measure that references the Calendar table.
Why it's wrong here
Measures do not create relationships.

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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

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.

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FAQ

Questions learners often ask

What does this PL-300 question test?

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: Add an object to the 'relationships' array. — Option B is correct because relationships are defined in the 'relationships' array within the dataset. Option A is wrong because the 'tables' array holds table definitions, not relationships. Option C is wrong because measures are separate. Option D is wrong because the dataset version is metadata, not a place for relationships.

What should I do if I get this PL-300 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 21, 2026

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