COMPTIA DATA+ DOMAIN 1 OF 5

CompTIA Data+: Data Concepts and Environments

The provider lists this domain at 20% of the exam.

In plain English

Where data lives and what it looks like: the types of databases and files, the places data comes from, and the tools analysts use to work with it.

What the provider lists under it

Database types, data structures, file extensions and data types
Data sources: databases, APIs, website data, files, logs
Infrastructure: cloud, on-premises, storage, containerisation
Data tools: coding environments, BI software, analysis platforms
AI concepts: AI models, natural language processing, robotic automation

Terms worth knowing

Data warehouse vs data lake: A warehouse stores cleaned, structured data for reporting. A lake stores raw data of any kind cheaply.
Generative AI: AI that creates new content, such as text, images, code or audio, from a prompt.
Container vs virtual machine: A virtual machine includes a whole operating system. A container shares the host’s operating system kernel and packages only the app and what it needs.

Quick answers

How much of the CompTIA Data+ exam is Data Concepts and Environments?

The provider lists it at 20% of the exam, according to the CompTIA Data+ certification page (DA0-002).

What topics are in Data Concepts and Environments?

Database types, data structures, file extensions and data types; Data sources: databases, APIs, website data, files, logs; Infrastructure: cloud, on-premises, storage, containerisation; Data tools: coding environments, BI software, analysis platforms; AI concepts: AI models, natural language processing, robotic automation.

The other CompTIA Data+ domains

Data Acquisition and Preparation (22% of the exam)
Data Analysis (24% of the exam)
Visualization and Reporting (20% of the exam)
Data Governance (14% of the exam)

Test yourself

Full-length CompTIA Data+ practice tests with an explanation for every answer option.

Browse the CompTIA Data+ practice tests All domains

Domain names, weights and topic lists come from the CompTIA Data+ certification page (DA0-002), checked 2 November 2026. Providers change their outlines, so confirm the current version before you book. The plain-English explanations are ours, not the provider’s. Not affiliated with, endorsed by or sponsored by any certification vendor or exam body. Certification names, exam codes and product names are trademarks of their respective owners and are used only to identify the exam a practice product prepares for. Our questions are original and are not actual exam questions.