- A
A. Product reviews, Customer records, Marketing images
Why wrong: This order is incorrect because product reviews (JSON) are semi-structured, which is less structured than customer records (structured).
- B
B. Customer records, Product reviews, Marketing images
Customer records in a relational table are strictly structured (fixed schema), product reviews as JSON are semi-structured (schema-on-read), and marketing images are unstructured (binary files). This is the correct order from most to least structured.
- C
C. Marketing images, Customer records, Product reviews
Why wrong: Marketing images are unstructured, which is the least structured, so they should not be first.
- D
D. Customer records, Marketing images, Product reviews
Why wrong: While customer records are correctly first, marketing images are less structured than product reviews (JSON is semi-structured, images are unstructured). The order should place product reviews before images.
DP-900 Describe core data concepts Practice Question
This DP-900 practice question tests your understanding of describe core data concepts. 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.
A company stores customer records in a relational table with columns like CustomerID, Name, and Email. Product reviews are stored as JSON documents, and marketing images are stored as PNG files. Which of the following correctly orders these data types from most structured to least structured?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"least"Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
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
B. Customer records, Product reviews, Marketing images
Customer records in a relational table have a fixed schema with defined columns (e.g., CustomerID, Name, Email), making them the most structured. Product reviews stored as JSON documents are semi-structured because they have a flexible schema with key-value pairs but no fixed columns. Marketing images as PNG files are unstructured binary data with no inherent schema. Option B correctly orders these from most to least structured.
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.
- ✗
A. Product reviews, Customer records, Marketing images
Why it's wrong here
This order is incorrect because product reviews (JSON) are semi-structured, which is less structured than customer records (structured).
- ✓
B. Customer records, Product reviews, Marketing images
Why this is correct
Customer records in a relational table are strictly structured (fixed schema), product reviews as JSON are semi-structured (schema-on-read), and marketing images are unstructured (binary files). This is the correct order from most to least structured.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
C. Marketing images, Customer records, Product reviews
Why it's wrong here
Marketing images are unstructured, which is the least structured, so they should not be first.
- ✗
D. Customer records, Marketing images, Product reviews
Why it's wrong here
While customer records are correctly first, marketing images are less structured than product reviews (JSON is semi-structured, images are unstructured). The order should place product reviews before images.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse semi-structured JSON with unstructured data, or assume that any file format (like PNG) has inherent structure, leading them to misorder the data types by perceived complexity rather than schema rigidity.
Detailed technical explanation
How to think about this question
Structured data relies on a predefined schema enforced by the database (e.g., SQL Server table with constraints), while semi-structured data like JSON uses self-describing tags or attributes, allowing schema-on-read flexibility. Unstructured data such as PNG files lacks any internal data model; its structure is purely at the file system level (e.g., headers and pixel data), not queryable without specialized processing. In Azure, this distinction affects storage choices: Azure SQL Database for structured, Cosmos DB for semi-structured, and Blob Storage for unstructured.
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.
TExam Day Tips
- 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this DP-900 question test?
Describe core data concepts — This question tests Describe core data concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: B. Customer records, Product reviews, Marketing images — Customer records in a relational table have a fixed schema with defined columns (e.g., CustomerID, Name, Email), making them the most structured. Product reviews stored as JSON documents are semi-structured because they have a flexible schema with key-value pairs but no fixed columns. Marketing images as PNG files are unstructured binary data with no inherent schema. Option B correctly orders these from most to least structured.
What should I do if I get this DP-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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.
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