The answer is that Query Store is not enabled on the database. This is the most likely reason because the Query Store must be explicitly turned on for each Azure SQL Database to begin collecting and persisting query runtime statistics, which the KQL query in Azure Monitor relies upon to return results. Without it, the diagnostic tables remain empty for that specific database, even though the AzureDiagnostics table and the correct category name are in place. On the Microsoft Azure Data Fundamentals DP-900 exam, this question tests your understanding of Azure SQL monitoring prerequisites, often appearing as a trap where you might suspect a syntax error or wrong table name instead of the missing feature. A common memory tip is to think of the Query Store as a light switch—it must be flipped on before you can see the room’s details. Remember: no Query Store, no runtime stats.
DP-900 Practice Question: Identify considerations for relational data on Azure
This DP-900 practice question tests your understanding of identify considerations for relational data on azure. 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.
```kusto
// KQL query in Azure Monitor
AzureDiagnostics
| where ResourceProvider == "MICROSOFT.SQL"
| where Category == "QueryStoreRuntimeStatistics"
| summarize avg_duration = avg(duration_s) by DatabaseName
| order by avg_duration desc
```
A DBA runs the above KQL query in Azure Monitor for an Azure SQL Database. The query returns no results. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Refer to the exhibit.
```kusto
// KQL query in Azure Monitor
AzureDiagnostics
| where ResourceProvider == "MICROSOFT.SQL"
| where Category == "QueryStoreRuntimeStatistics"
| summarize avg_duration = avg(duration_s) by DatabaseName
| order by avg_duration desc
```
A
Query Store is not enabled on the database
QueryStoreRuntimeStatistics is populated only when Query Store is enabled.
B
The AzureDiagnostics table does not contain SQL data
Why wrong: AzureDiagnostics does contain SQL diagnostic data.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Query Store is not enabled on the database
Option B is correct because the Query Store must be enabled for each database to generate runtime statistics. Option A is wrong because AzureDiagnostics is a common table for SQL diagnostics. Option C is wrong because the category name is correct. Option D is wrong because the syntax is valid.
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.
✓
Query Store is not enabled on the database
Why this is correct
QueryStoreRuntimeStatistics is populated only when Query Store is enabled.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The AzureDiagnostics table does not contain SQL data
Why it's wrong here
AzureDiagnostics does contain SQL diagnostic data.
✗
The category name is misspelled
Why it's wrong here
The category is correct.
✗
The KQL syntax is incorrect
Why it's wrong here
The KQL syntax is valid.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-900 question in full detail.
Identify which DP-900 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.
Identify considerations for relational data on Azure — This question tests Identify considerations for relational data on Azure — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Query Store is not enabled on the database — Option B is correct because the Query Store must be enabled for each database to generate runtime statistics. Option A is wrong because AzureDiagnostics is a common table for SQL diagnostics. Option C is wrong because the category name is correct. Option D is wrong because the syntax is valid.
What should I do if I get this DP-900 question wrong?
Identify which DP-900 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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
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 →
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.
This DP-900 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 DP-900 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.