PCDE Design and implement database schemas Practice Question
This PCDE practice question tests your understanding of design and implement database schemas. 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.
A company uses Cloud SQL for SQL Server. They want to store JSON data in a column and query it efficiently. What should they do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Store JSON in an nvarchar(max) column and use JSON_VALUE in queries.
Option A is correct because SQL Server supports JSON functions like JSON_VALUE. Using nvarchar(max) with JSON functions allows querying. Option B is wrong because each value in a separate column is not flexible. Option C is wrong because a single TEXT column cannot be efficiently queried. Option D is wrong because storing JSON as binary adds complexity.
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.
✗
Store each JSON field as a separate column.
Why it's wrong here
This defeats the purpose of JSON flexibility and leads to schema changes.
✓
Store JSON in an nvarchar(max) column and use JSON_VALUE in queries.
Why this is correct
SQL Server's JSON support allows querying inside nvarchar(max) columns.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use a TEXT column with no indexing.
Why it's wrong here
TEXT columns cannot be indexed efficiently for JSON queries.
✗
Store JSON as a binary column and parse in application.
Why it's wrong here
This adds application complexity and doesn't leverage database JSON functions.
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 PCDE 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.
Design and implement database schemas — This question tests Design and implement database schemas — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Store JSON in an nvarchar(max) column and use JSON_VALUE in queries. — Option A is correct because SQL Server supports JSON functions like JSON_VALUE. Using nvarchar(max) with JSON functions allows querying. Option B is wrong because each value in a separate column is not flexible. Option C is wrong because a single TEXT column cannot be efficiently queried. Option D is wrong because storing JSON as binary adds complexity.
What should I do if I get this PCDE question wrong?
Identify which PCDE 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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