Quick Answer
The answer is Azure SQL Database and Azure SQL Managed Instance. These two services are classified as structured data storage in Azure because they both rely on a relational database engine that enforces a rigid schema with predefined tables, columns, and data types, ensuring data integrity and consistency through ACID transactions. On the Microsoft Azure Data Fundamentals DP-900 exam, this question tests your ability to distinguish structured, semi-structured, and unstructured storage types—a core objective under the “describe core data concepts” domain. A common trap is confusing Azure SQL Database with Azure Cosmos DB, which supports semi-structured NoSQL data; remember that any service built on the SQL Server engine is structured, while blob or file storage is unstructured. For a quick memory tip: think “SQL equals structured,” so any Azure service with “SQL” in its name—like SQL Database or SQL Managed Instance—is your go-to for structured data.
This DP-900 practice question tests your understanding of describe core data concepts. 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.
Which TWO data storage types are classified as structured data in Azure? (Choose two.)
Azure Cosmos DB
Why wrong: Stores semi-structured data (JSON documents).
Azure Data Lake Storage
Why wrong: Stores unstructured or semi-structured data in files.
Azure SQL Managed Instance
Stores structured relational data with a fixed schema.
Azure SQL Database
Stores structured relational data with a fixed schema.
Azure Blob Storage
Why wrong: Stores unstructured data like files and images.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure SQL Managed Instance
Azure SQL Managed Instance is a fully managed SQL Server database engine in Azure, which stores data in a relational schema with predefined tables, columns, and data types. This structured format enforces a rigid schema, making it a classic example of structured data storage in Azure.
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.
Azure Cosmos DB
Why it's wrong here
Stores semi-structured data (JSON documents).
Azure Data Lake Storage
Why it's wrong here
Stores unstructured or semi-structured data in files.
Azure SQL Managed Instance
Why this is correct
Stores structured relational data with a fixed schema.
Related concept
Read the scenario before looking for a memorised answer.
Azure SQL Database
Why this is correct
Stores structured relational data with a fixed schema.
Related concept
Read the scenario before looking for a memorised answer.
Azure Blob Storage
Why it's wrong here
Stores unstructured data like files and images.
Common exam traps
The trap here is that candidates often confuse NoSQL databases like Azure Cosmos DB as structured because they support indexing and querying, but structured data specifically requires a fixed relational schema enforced by the database engine, which Cosmos DB does not mandate.
Detailed technical explanation
Structured data in Azure relies on a fixed schema defined by tables, columns, and constraints, as seen in Azure SQL Database and Azure SQL Managed Instance, which both use the SQL Server engine with T-SQL for querying. Under the hood, these services store data in pages and extents within .mdf files, enforcing ACID transactions and referential integrity. In a real-world scenario, a financial application storing transaction records with strict schema requirements (e.g., account number, amount, timestamp) would use Azure SQL Database to ensure data consistency and relational integrity.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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Describe core data concepts — study guide chapter
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FAQ
Describe core data concepts — This question tests Describe core data concepts — Read the scenario before looking for a memorised answer..
The correct answer is: Azure SQL Managed Instance — Azure SQL Managed Instance is a fully managed SQL Server database engine in Azure, which stores data in a relational schema with predefined tables, columns, and data types. This structured format enforces a rigid schema, making it a classic example of structured data storage in Azure.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 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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