DP-900 Describe core data concepts Practice Question
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 classification of data describes information that has a fixed schema and is organized into rows and columns, such as data found in a relational database table?
Why wrong: Unstructured data lacks a predefined schema, such as text files, images, or videos. It is not organized into rows and columns.
B
Semi-structured data
Why wrong: Semi-structured data has some organizational properties (like tags or keys) but does not require a fixed schema. Examples include JSON or XML files.
C
Structured data
Structured data conforms to a fixed schema, typically in tables with rows and columns. This is the standard format for relational database systems.
D
Transformed data
Why wrong: Transformed data refers to data that has been processed or changed from its original form, not a primary classification of data structure.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Structured data
Structured data is defined by a fixed schema, where each data element adheres to a predefined data type and relationship, organized into rows and columns. This is the fundamental model of a relational database table, such as those in Azure SQL Database or SQL Server, where constraints like primary keys and foreign keys enforce the schema.
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.
✗
Unstructured data
Why it's wrong here
Unstructured data lacks a predefined schema, such as text files, images, or videos. It is not organized into rows and columns.
✗
Semi-structured data
Why it's wrong here
Semi-structured data has some organizational properties (like tags or keys) but does not require a fixed schema. Examples include JSON or XML files.
✓
Structured data
Why this is correct
Structured data conforms to a fixed schema, typically in tables with rows and columns. This is the standard format for relational database systems.
Related concept
Read the scenario before looking for a memorised answer.
✗
Transformed data
Why it's wrong here
Transformed data refers to data that has been processed or changed from its original form, not a primary classification of data structure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Microsoft often tests the distinction between structured and semi-structured data, where candidates mistakenly classify JSON or XML as structured because it has some organization, but the key differentiator is the rigid, predefined schema enforced by the database, not just the presence of tags or keys.
Detailed technical explanation
How to think about this question
In a relational database, the fixed schema is enforced by the database management system (DBMS) using Data Definition Language (DDL) statements like CREATE TABLE, which define column names, data types (e.g., INT, VARCHAR), and constraints (e.g., NOT NULL, UNIQUE). This schema ensures ACID compliance and enables efficient indexing and querying via SQL. A real-world scenario is a customer orders table in Azure SQL Database, where each row represents an order and columns like OrderID, CustomerID, and OrderDate have strict data types, allowing for reliable JOIN operations across tables.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-900 question in full detail.
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: Structured data — Structured data is defined by a fixed schema, where each data element adheres to a predefined data type and relationship, organized into rows and columns. This is the fundamental model of a relational database table, such as those in Azure SQL Database or SQL Server, where constraints like primary keys and foreign keys enforce the schema.
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.
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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