DA0-001 Comparing and Contrasting Data Concepts Practice Question
This DA0-001 practice question tests your understanding of comparing and contrasting data concepts. 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.
Which THREE characteristics describe unstructured data? (Select three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Contains text, images, audio, video
Option A is correct because unstructured data lacks a predefined data model and is typically composed of non-tabular formats such as text, images, audio, and video. Unlike structured data, it cannot be directly stored in relational databases without transformation. This characteristic is fundamental to distinguishing unstructured data from structured or semi-structured types.
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.
✓
Contains text, images, audio, video
Why this is correct
Correct. Unstructured data includes multimedia and free text.
Related concept
Read the scenario before looking for a memorised answer.
✗
Easily processed by standard SQL
Why it's wrong here
Incorrect. SQL works best with structured data.
✗
Organised in rows and columns
Why it's wrong here
Incorrect. This describes structured data.
✓
Requires schema-on-read
Why this is correct
Correct. The schema is applied when reading the data, not beforehand.
Related concept
Read the scenario before looking for a memorised answer.
✓
Often stored in data lakes
Why this is correct
Correct. Data lakes commonly store unstructured data.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse 'unstructured' with 'semi-structured' (e.g., JSON or XML) and incorrectly assume that SQL can process all non-tabular data, or they may forget that schema-on-read is a defining trait of unstructured data in modern big data architectures.
Detailed technical explanation
How to think about this question
Unstructured data often relies on schema-on-read, where the structure is imposed at query time rather than at write time, enabling flexibility for diverse data types like JSON blobs, PDFs, or video files. In practice, data lakes (e.g., Amazon S3 or Hadoop HDFS) are commonly used to store unstructured data because they allow raw ingestion without schema enforcement. This contrasts with schema-on-write systems like traditional RDBMS, which require predefined table structures before data can be loaded.
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 practitioner preparing for the DA0-001 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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.
Comparing and Contrasting Data Concepts — This question tests Comparing and Contrasting Data Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Contains text, images, audio, video — Option A is correct because unstructured data lacks a predefined data model and is typically composed of non-tabular formats such as text, images, audio, and video. Unlike structured data, it cannot be directly stored in relational databases without transformation. This characteristic is fundamental to distinguishing unstructured data from structured or semi-structured types.
What should I do if I get this DA0-001 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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