Question 1
Which data type is best suited for storing a customer's email address?
Correct Answer:
Varchar/String
Question 2
In a relational database, what is a primary key?
Correct Answer:
A column or set of columns that uniquely identifies each row in a table
Question 3
What is the primary purpose of a data warehouse?
Correct Answer:
To store integrated historical data for reporting and analysis
Question 4
In database design, what is the difference between a schema and an instance?
Correct Answer:
A schema is the overall design/structure; an instance is a snapshot of data at a specific time
Question 5
Which scenario is most appropriate for using a NoSQL database rather than a relational database?
Correct Answer:
An application that needs to store and retrieve large volumes of unstructured social media posts
Question 1
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About this Exam

Prepare with the CompTIA Data+ Practice Questions - CompTIA Data+ Certification (DA0-001) Exam practice quiz. This question bank includes 100 questions covering data, database, customer, company, and sales. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CompTIA Data+ Practice Questions - CompTIA Data+ Certification (DA0-001) Exam

This practice set contains 100 questions from the matching question bank and focuses on data, database, customer, company, and sales. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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