TypeScript and Databases: A Practical Guide

The book "TypeScript and Databases: A Practical Guide" is a comprehensive resource for developers who want to master modern approaches to working with databases in TypeScript. Unlike abstract textbooks, this book focuses on real-world tasks: from schema design to optimizing complex queries with full type safety.

Who is this book for?

• JavaScript/TypeScript developers transitioning to backend development
• Full-stack engineers looking to deepen their knowledge of databases
• Teams implementing strict typing in projects with PostgreSQL, MySQL, or MongoDB
• Anyone who wants to write reliable and predictable code for working with data

What will you learn?

• How to design typed schemas for relational and document databases
• Working with TypeORM, Prisma, and Sequelize through practical examples
• Creating safe SQL queries using template literals and type generation
• Handling transactions, migrations, and pagination with full TypeScript support
• Integrating Redis for caching and sessions
• Writing unit tests for the data layer

Why is this book useful?

Each chapter contains ready-to-use code examples that can be adapted to your own project. You will learn to avoid common mistakes (such as SQL injections or type issues during aggregation) and get patterns for building scalable solutions. Special attention is given to combining TypeScript's strict typing with the flexibility of modern databases — you will see how these tools complement each other.

The book is suitable both for self-study and for use as a reference. After reading it, you will be able to confidently design backend architecture where every database query is guaranteed to match the expected data structure.