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.

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