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The complete spectrum of database testing for QA engineers. Covers SQL query writing from fundamentals through advanced JOINs, schema migration testing, constraint verification, NoSQL document stores, database performance testing, and GDPR-compliant data masking. Every concept reinforced with hands-on exercises.

It is written for QA engineers with some hands-on experience who want to move from \"it works on my machine\" to confident, production-grade practice.

This is Book 15 of 26 in The Modern QA Engineer Skillset — the \"Technical Foundations\" track of a series mapping the complete 2026 QA skill set, from AI-augmented automation to career strategy. Each book stands alone; together they form the curriculum behind modernQAcourse.com.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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