---
title: "Database Query Logic - Reviews, Revenue and Downloads in Nigeria | Apple App Store"
description: "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 cas"
---

# Database Query Logic — Nigeria
> Practice SQL Offline

![Database Query Logic App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/b9/e0/ea/b9e0ea97-3e42-0f4a-17fc-c647a541186c/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [AFTW](https://apptail.io/developer/aftw-mgtqVb)
**Category:** Education
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** com.quizfactory.global.databasequerylogic
**Store:** Apple App Store
**Country:** Nigeria
**Version:** 1.0 (released 2026-06-02)
**Original Release:** 2026-06-03
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ng/app/app/id6774180202)
**AppTail Page:** [https://apptail.io/app/database-query-logic-OnTA/nigeria](https://apptail.io/app/database-query-logic-OnTA/nigeria)

## Database Query Logic Description
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.

## Database Query Logic Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/8e/49/1b/8e491be2-d220-4195-4db8-46e91219839b/01-home.png/1290x2796.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d3/6e/45/d36e4539-9168-4b24-1ea8-aa5c58026d9a/02-practice.png/1290x2796.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/aa/e0/93/aae09326-8ab8-6555-7264-a90aa753f1da/03-exam.png/1290x2796.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/0d/cc/fb/0dccfb49-4cd2-065e-e1c8-6082825aa83f/04-review.png/1290x2796.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/57/96/1d/57961dd2-7311-3121-989f-d4f0b86606fe/05-stats.png/1290x2796.png)






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## Database Query Logic Available In
- [United Kingdom](https://apptail.io/app/database-query-logic-OnTA/united-kingdom)
- [Nigeria](https://apptail.io/app/database-query-logic-OnTA/nigeria)
- [United States](https://apptail.io/app/database-query-logic-OnTA/united-states)

---

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