DP-900 domain - 30% of the exam

Describe Core Data Concepts

Describe Core Data Concepts is 30% of the Microsoft Azure Data Fundamentals (DP-900) (DP-900) exam. These are the objectives it covers, each with practice questions and worked explanations.

Objectives in this domain

Describe ways to represent data including structured, semi-structured, and unstructured formats.
Section 1.1easy
Identify options for data storage including file stores, databases, and data lakes.
Section 1.2easy
Describe common data workloads including transactional and analytical processing.
Section 1.3easy
Identify roles and responsibilities for data workloads including data engineers, analysts, and scientists.
Section 1.4easy

Sample question from this domain

Free sampleDescribe Core Data Conceptsmedium

Storing customer profiles as JSON documents whose fields vary between records is an example of semi-structured data. Is this statement correct?

AYes Correct
BNo

JSON documents with fields that differ between records are semi-structured, not unstructured. JSON is named in the grounding as a common semi-structured format precisely because its documents can vary in their specific fields between instances.

Why A is correct: Correct. JSON is named in the grounding as a common semi-structured format precisely because its documents can vary in their specific fields between instances.

Why B is wrong: Answering No is wrong because semi-structured data is defined as having some structure while allowing variation between instances, and JSON with varying fields is the common example the grounding gives.

Other domains in this exam

Identify Considerations for Relational Data on Azure23% of the exam
Describe Considerations for Working with Non-Relational Data on Azure18% of the exam
Describe an Analytics Workload on Azure29% of the exam

See also the DP-900 cert hub, the study guide, and the cheat sheet.

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