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.