# Database Transactions

> Database Transactions (iPhone/iPad app by Tsuyoshi Sezaki.)

- Source: https://appshunter.io/ios/app/database-transactions/id6773035101 (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: English
- Released: 2026-05-28
- Data updated: 2026-07-06
- User reviews in markdown: https://appshunter.io/ios/app/database-transactions/id6773035101/reviews.md

## What is Database Transactions?

Database Transactions is an independent study app for learning and practicing core transaction concepts in database systems. It is built for students, backend developers, interview candidates, and anyone reviewing how reliable data systems handle concurrent work.

Practice across 160 questions covering:
- Fundamentals such as ACID, schedules, locks, and isolation
- Practical skills for reasoning about SQL behavior and consistency
- Common pitfalls including lost updates, dirty reads, and deadlocks
- Advanced concepts such as serializability, recovery, MVCC, and distributed transactions

Key features:
- FSRS spaced-repetition intervals to review at the right time
- Weak-point heatmap to spot topics that need attention
- Daily challenge for consistent practice
- Mock exams for timed review
- Explanations for every question
- Offline practice, no login required

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

Privacy: 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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- [簿記1級合格ドリル](https://appshunter.io/ios/app/1/id6761160381)
- [簿記3級 合格ドリル](https://appshunter.io/ios/app/3/id6761160384)
- [FP3級 合格ドリル](https://appshunter.io/ios/app/fp3/id6761160498)
- [危険物乙4 合格ドリル](https://appshunter.io/ios/app/4/id6761160536)
- [英語2級レベル対策ドリル](https://appshunter.io/ios/app/2/id6761160574)

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 2026-07-06.*