# Relational Algebra — Practice Queries Daily

> Practice Queries Daily (iPhone/iPad app by Tsuyoshi Sezaki.)

- Source: https://appshunter.io/ios/app/relational-algebra/id6773055862 (this page in markdown: same URL + `.md`)
- Developer: [Tsuyoshi Sezaki](https://appshunter.io/developer/1886356149)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 38 MB
- Languages: American English
- Released: 2026-05-28
- Data updated: 2026-06-04
- User reviews in markdown: https://appshunter.io/ios/app/relational-algebra/id6773055862/reviews.md

## What is Relational Algebra?

Relational Algebra is an independent study app for building confidence with database theory, query logic, and formal operations through focused practice.

Designed for students, self-learners, interview preparation, and anyone reviewing database fundamentals, the app includes 160 questions across Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts.

- FSRS spaced-repetition intervals to help you review at the right time
- Weak-point heatmap to show topics that need more attention
- Daily challenge for consistent practice
- Mock exams for timed review sessions
- Every question includes an explanation
- Offline practice with no login required

Use it to practice selection, projection, joins, set operations, division, equivalence, query transformation, and common reasoning mistakes.

Independent study app for Relational Algebra practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners.

Practice offline, no login required.


## Version history (last 1 release)

### 1.0 — 2026-05-28

No release notes.

## More apps by Tsuyoshi Sezaki

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- [運転免許 合格ドリル](https://appshunter.io/ios/app/id6761160841)

All apps by Tsuyoshi Sezaki: https://appshunter.io/developer/1886356149

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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 2026-06-04.*