Mastering Business Data With SQL: A Practical Guide to Querying, Modeling, and Compliance Using SQL Server 2025

*Mastering Business Data with SQL* is a comprehensive, hands-on guide for business analysts, data professionals, and technical decision-makers who want to unlock the full potential of **SQL Server 2025**. Whether you’re working in analytics, compliance, or software development, this book teaches you how to **query, model, secure, and report on data** in real-world business environments.
Covering everything from the basics of SELECT and filtering queries to advanced **multi-tenant architecture** , **window functions** , and **GDPR compliance** , the book combines clear explanations with practical exercises using the latest SQL Server 2025 features and tools like **SSMS 21.x** and **Visual Studio Code**.
You’ll learn how to:
* Retrieve and manipulate data using core SQL skills
* Design normalized data models and enforce relational integrity
* Use **views** , **aggregates** , **joins** , and **window functions** for powerful analytics
* Architect databases for **SaaS and multi-tenant systems**
* Apply **row-level security** , **data masking** , and **encryption** for access control and privacy
* Comply with **GDPR** through techniques like pseudonymization, erasure, and audit trails
* Integrate SQL Server with **Excel** and **Power BI** for dynamic reporting

Each chapter includes structured **exercises** with step-by-step instructions and realistic datasets, making the book ideal for self-paced learning or classroom use. Whether you’re preparing for enterprise projects or sharpening your SQL skills for business decision-making, this book equips you with the knowledge and tools to manage business data securely and effectively.