Database Query Logic
Practice SQL Offline
Free · Designed for iPad. Not verified for macOS.
160 questions with FSRS review, mock exams, explanations, and no login.
Database Query Logic is an independent study app for building confidence with query reasoning, SQL behavior, joins, filters, aggregation, NULL handling, subqueries, indexes, transactions, and edge cases.
Designed for beginners, students, developers, analysts, and interview candidates, it turns 160 focused questions into repeatable practice across Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts.
- FSRS spaced-repetition intervals
- Weak-point heatmap to spot gaps
- Daily challenge for steady progress
- Mock exams for timed review
- Explanation included with every question
- Offline practice for study anywhere
- No account or login required
Practice offline, no login required. Your study flow is built for private, independent preparation.
Independent study app for Database Query Logic practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners.
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The developer, Tsuyoshi Sezaki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Tsuyoshi Sezaki
- Size
- 40.1 MB
- Category
- Education
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 QuizFactory