# CompTIA Data+ DA0-001 Prep — Practice Questions & Exam Prep

> Practice Questions & Exam Prep (iPhone/iPad app by Davy Raitt.)

- Source: https://appshunter.io/ios/app/comptia-data-da0/id6761255165 (this page in markdown: same URL + `.md`)
- Developer: [Davy Raitt](https://appshunter.io/developer/1795318281)
- Category: Education, Productivity
- Price: $12.99
- Age rating: 4+
- Requires: iOS 15.0 · 27 MB
- Languages: American English
- Released: 2026-03-27
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/comptia-data-da0/id6761255165/reviews.md

## What is CompTIA Data+ DA0?

PASS YOUR COMPTIA DATA+ (DA0-001) EXAM
Master data analytics concepts with 500+ practice questions designed to get you certified on your first attempt.
500+ practice questions
5-minute study sessions
Track your progress
Remove mastered questions
Text-to-speech support
Dark mode available

WHY GET CERTIFIED?
Data analytics professionals earn up to $203K annually (Skillsoft 2024). CompTIA Data+ validates your ability to transform raw data into actionable insights, making you indispensable to any data-driven organization.

WHAT YOU'LL MASTER:
• Star and snowflake schemas with fact tables, dimensions, and normalization tradeoffs
• OLTP vs OLAP systems including transactional processing and analytical workloads
• Relational vs non-relational databases covering SQL, document, key-value, and graph models
• ETL vs ELT pipelines with extraction, transformation, and loading strategies
• Data types and levels of measurement including nominal, ordinal, interval, and ratio
• Data mining techniques including clustering, classification, and regression analysis
• Data cleansing methods for deduplication, missing values, and outlier handling
• Data profiling and quality validation with completeness, consistency, and accuracy checks
• Data visualization best practices using bar charts, histograms, scatter plots, and heat maps
• Data governance frameworks including metadata management, data stewardship, and lineage tracking
• Structured, semi-structured, and unstructured data formats including JSON, XML, and flat files
• Slowly changing dimensions with Type 1, Type 2, and Type 3 historical tracking methods
• SQL operations including joins, subqueries, aggregations, and GROUP BY with HAVING clauses
• Sampling methods covering simple random, stratified, cluster, and systematic techniques
• Statistical analysis concepts including hypothesis testing, p-values, confidence intervals, and correlation

STUDY ANYWHERE:
Coffee breaks. Commutes. Lunch hours. Turn dead time into data analytics expertise.
Download now. Pass your exam. Master data.


## Version history (last 2 releases)

### 3.0.0 — 2026-04-16

New: Review missed questions after each quiz. Improved quiz experience with radio buttons for single-answer questions. Added exit button during quizzes. Better score display. Stability improvements.

### 2.1.0 — 2026-03-27

No release notes.

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All apps by Davy Raitt: https://appshunter.io/developer/1795318281

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-15.*