Database Isolation Levels vs CompTIA Linux+·Server+·Cloud+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Database Isolation Levels
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Database Isolation Levels is an independent study app for learning how transactions behave under real database concurrency rules. It is built for students, backend developers, data engineers, interview candidates, and anyone who wants clearer intuition about dirty reads, non-repeatable reads, phantom reads, serialization anomalies, locking, MVCC, and practical tradeoffs. Study across 160 focused questions organized by: - Fundamentals - Practical Skills - Common Pitfalls - Advanced Concepts Key features: - FSRS spaced-repetition intervals to review at the right time - Weak-point heatmap to show where you need more practice - Daily challenge for consistent progress - Mock exams for timed review - Explanations included with every question - Offline practice with no login required Use it for quick refreshers, deeper concept review, interview preparation, or checking whether you really understand how isolation levels affect application behavior. Independent study app for Database Isolation Levels 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.
CompTIA Linux+·Server+·Cloud+
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Keep studying across your phone, tablet and desktop. Use your phone on the move and a tablet or desktop when you want more room to study. Connect the same StudyCert account to continue your learning in the app and on the desktop web. Includes 1536 practice questions across 3 exams. 1. Prepare for CompTIA Linux+ (XK0-006) with 536 practice questions and 108 key terms. Study coverage · 5 areas: System Management · Services and User Management · Security · Automation, Orchestration, and Scripting · Troubleshooting Content languages: English. Counts: English materials. 2. Prepare for CompTIA Server+ with 500 practice questions and 159 key terms. Study coverage · 4 areas: Server Hardware Installation and Management · Server Administration · Security and Disaster Recovery · Troubleshooting Content languages: English, Japanese. Counts: English materials. 3. Prepare for CompTIA Cloud+ with 500 practice questions and 116 key terms. Study coverage · 6 areas: Cloud Architecture · Deployment · Operations · Security · DevOps Fundamentals · Troubleshooting Content languages: English, Japanese. Counts: English materials. 1. Learn the basic terms Use flashcards for meanings, exam context and selection criteria. Mark known and unfamiliar terms for focused review. 2. Practice and read the explanations Study by exam-specific set, domain or difficulty. Read answer and option explanations; use unfinished and wrong-answer filters, shuffle, a timer and session resume. Practice in sets of 50 questions for each exam. 3. Review mistakes Revisit bookmarks, recent errors and repeated mistakes. Use glossary reports, weak-area analysis and study history to plan revision. 4. Check readiness with a timed mock Use each exam’s settings below, then review results, domain scores and mistakes. Mock questions / time limit (minutes), by exam: 1: 90 / 90; 2: 90 / 90; 3: 90 / 90 Tools that fit your study routine Audio study and autoplay are optional. Listen to terms and meanings and adjust repeats and pauses. Continue your routine with a study calendar, weekly goals, reminders and themes. Content, features, languages and paid access are specific to each exam. Check the included content and price before purchasing. This is an independent study aid, not an official, affiliated or endorsed app of any exam administrator or certification body. Exam names and trademarks belong to their respective owners.
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Verdict
The clearest difference is in-app purchases: Database Isolation Levels at none against CompTIA Linux+·Server+·Cloud+'s 6. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. CompTIA Linux+·Server+·Cloud+ sells 6 one-off in-app purchases. Database Isolation Levels asks for nothing beyond the download.
| Parameter | Database Isolation Levels | CompTIA Linux+·Server+·Cloud+ |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 5 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 38 MB | 178 MB |
| Age rating | 4+ | 4+ |
| Developer | AFTW LLC | CHOI SEONGMIN |
In-app purchases
Database Isolation Levels
No in-app purchases
CompTIA Linux+·Server+·Cloud+
- CompTIA Server Add-on Discount$2.49
- CompTIA Cloud+ Add-on Discount$2.49
- CompTIA Linux+ Add-on Discount$3.49
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- CompTIA Server+ SK0-005$4.99
- CompTIA Cloud+ CV0-004$4.99
- Lifetime Access$6.99





